diff --git a/wp-admin/admin-ajax.php b/wp-admin/admin-ajax.php
index a2ee9c0286..35d9e88bbb 100644
--- a/wp-admin/admin-ajax.php
+++ b/wp-admin/admin-ajax.php
@@ -28,7 +28,7 @@ if ( ! is_user_logged_in() ) {
 		if ( ! $id )
 			die('-1');
 
-		$message = sprintf( __('<strong>ALERT: You are logged out!</strong> Could not save draft. <a href="%s" target="blank">Please log in again.</a>'), wp_login_url() );
+		$message = sprintf( __('<strong>ALERT: You are logged out!</strong> Could not save draft. <a href="%s" target="_blank">Please log in again.</a>'), wp_login_url() );
 			$x = new WP_Ajax_Response( array(
 				'what' => 'autosave',
 				'id' => $id,
@@ -919,7 +919,7 @@ case 'autosave' : // The name of this action is hardcoded in edit_post()
 	$data = '';
 	/* translators: draft saved date format, see http://php.net/date */
 	$draft_saved_date_format = __('g:i:s a');
-	$message = sprintf( __('Draft Saved at %s.'), date_i18n( $draft_saved_date_format ) );
+	$message = sprintf( __('Draft saved at %s.'), date_i18n( $draft_saved_date_format ) );
 
 	$supplemental = array();
 	if ( isset($login_grace_period) )
diff --git a/wp-admin/comment.php b/wp-admin/comment.php
index 8b63a57a27..cae90c5c5c 100644
--- a/wp-admin/comment.php
+++ b/wp-admin/comment.php
@@ -132,7 +132,7 @@ switch ( $action ) {
 </tr>
 </table>
 
-<p><?php _e('Are you sure you want to do that?'); ?></p>
+<p><?php _e('Are you sure you want to do this?'); ?></p>
 
 <form action='comment.php' method='get'>
 
diff --git a/wp-admin/edit-comments.php b/wp-admin/edit-comments.php
index e5b01a65ff..0ea72a3bac 100644
--- a/wp-admin/edit-comments.php
+++ b/wp-admin/edit-comments.php
@@ -177,7 +177,7 @@ $num_comments = ( $post_id ) ? wp_count_comments( $post_id ) : wp_count_comments
 //, number_format_i18n($num_comments->moderated) ), "<span class='comment-count'>" . number_format_i18n($num_comments->moderated) . "</span>"),
 //, number_format_i18n($num_comments->spam) ), "<span class='spam-comment-count'>" . number_format_i18n($num_comments->spam) . "</span>")
 $stati = array(
-		'all' => _n_noop('All', 'All'), // singular not used
+		'all' => _nx_noop('All', 'All', 'comments'), // singular not used
 		'moderated' => _n_noop('Pending <span class="count">(<span class="pending-count">%s</span>)</span>', 'Pending <span class="count">(<span class="pending-count">%s</span>)</span>'),
 		'approved' => _n_noop('Approved', 'Approved'), // singular not used
 		'spam' => _n_noop('Spam <span class="count">(<span class="spam-count">%s</span>)</span>', 'Spam <span class="count">(<span class="spam-count">%s</span>)</span>'),
diff --git a/wp-admin/edit-form-advanced.php b/wp-admin/edit-form-advanced.php
index b2ac3c8104..6da4affb05 100644
--- a/wp-admin/edit-form-advanced.php
+++ b/wp-admin/edit-form-advanced.php
@@ -27,12 +27,14 @@ $messages['post'] = array(
 	__('Custom field updated.'),
 	__('Custom field deleted.'),
 	__('Post updated.'),
+	/* translators: %s: date and time of the revision */
 	isset($_GET['revision']) ? sprintf( __('Post restored to revision from %s'), wp_post_revision_title( (int) $_GET['revision'], false ) ) : false,
 	sprintf( __('Post published. <a href="%s">View post</a>'), get_permalink($post_ID) ),
 	__('Post saved.'),
 	sprintf( __('Post submitted. <a target="_blank" href="%s">Preview post</a>'), add_query_arg( 'preview', 'true', get_permalink($post_ID) ) ),
-	// translators: Publish box date format, see http://php.net/date - Same as in meta-boxes.php
-	sprintf( __('Post scheduled for: <b>%1$s</b>. <a target="_blank" href="%2$s">Preview post</a>'), date_i18n( __( 'M j, Y @ G:i' ), strtotime( $post->post_date ) ), get_permalink($post_ID) ),
+	sprintf( __('Post scheduled for: <strong>%1$s</strong>. <a target="_blank" href="%2$s">Preview post</a>'),
+		// translators: Publish box date format, see http://php.net/date
+		date_i18n( __( 'M j, Y @ G:i' ), strtotime( $post->post_date ) ), get_permalink($post_ID) ),
 	sprintf( __('Post draft updated. <a target="_blank" href="%s">Preview post</a>'), add_query_arg( 'preview', 'true', get_permalink($post_ID) ) )
 );
 $messages['page'] = array(
@@ -44,8 +46,7 @@ $messages['page'] = array(
 	isset($_GET['revision']) ? sprintf( __('Page restored to revision from %s'), wp_post_revision_title( (int) $_GET['revision'], false ) ) : false,
 	sprintf( __('Page published. <a href="%s">View page</a>'), get_permalink($post_ID) ),
 	sprintf( __('Page submitted. <a target="_blank" href="%s">Preview page</a>'), add_query_arg( 'preview', 'true', get_permalink($post_ID) ) ),
-	// translators: Publish box date format, see http://php.net/date - Same as in meta-boxes.php
-	sprintf( __('Page scheduled for: <b>%1$s</b>. <a target="_blank" href="%2$s">Preview page</a>'), date_i18n( __( 'M j, Y @ G:i' ), strtotime( $post->post_date ) ), get_permalink($post_ID) ),
+	sprintf( __('Page scheduled for: <strong>%1$s</strong>. <a target="_blank" href="%2$s">Preview page</a>'), date_i18n( __( 'M j, Y @ G:i' ), strtotime( $post->post_date ) ), get_permalink($post_ID) ),
 	sprintf( __('Page draft updated. <a target="_blank" href="%s">Preview page</a>'), add_query_arg( 'preview', 'true', get_permalink($post_ID) ) )
 );
 
@@ -75,7 +76,7 @@ if ( 0 == $post_ID ) {
 	if ( $autosave && mysql2date( 'U', $autosave->post_modified_gmt, false ) > mysql2date( 'U', $post->post_modified_gmt, false ) ) {
 		foreach ( _wp_post_revision_fields() as $autosave_field => $_autosave_field ) {
 			if ( normalize_whitespace( $autosave->$autosave_field ) != normalize_whitespace( $post->$autosave_field ) ) {
-				$notice = sprintf( __( 'There is an autosave of this post that is more recent than the version below.  <a href="%s">View the autosave</a>.' ), get_edit_post_link( $autosave->ID ) );
+				$notice = sprintf( __( 'There is an autosave of this post that is more recent than the version below.  <a href="%s">View the autosave</a>' ), get_edit_post_link( $autosave->ID ) );
 				break;
 			}
 		}
diff --git a/wp-admin/edit.php b/wp-admin/edit.php
index 950e3b094e..a1e7ebce90 100644
--- a/wp-admin/edit.php
+++ b/wp-admin/edit.php
@@ -171,7 +171,7 @@ if ( isset($_GET['s']) && $_GET['s'] )
 
 <?php
 if ( isset($_GET['posted']) && $_GET['posted'] ) : $_GET['posted'] = (int) $_GET['posted']; ?>
-<div id="message" class="updated"><p><strong><?php _e('This has been saved.'); ?></strong> <a href="<?php echo get_permalink( $_GET['posted'] ); ?>"><?php _e('View post'); ?></a> | <a href="<?php echo get_edit_post_link( $_GET['posted'] ); ?>"><?php _e('Edit post'); ?></a></p></div>
+<div id="message" class="updated"><p><strong><?php _e('This has been saved.'); ?></strong> <a href="<?php echo get_permalink( $_GET['posted'] ); ?>"><?php _e('View Post'); ?></a> | <a href="<?php echo get_edit_post_link( $_GET['posted'] ); ?>"><?php _e('Edit Post'); ?></a></p></div>
 <?php $_SERVER['REQUEST_URI'] = remove_query_arg(array('posted'), $_SERVER['REQUEST_URI']);
 endif; ?>
 
diff --git a/wp-admin/import/blogger.php b/wp-admin/import/blogger.php
index 9b0e929a3f..68ee467600 100644
--- a/wp-admin/import/blogger.php
+++ b/wp-admin/import/blogger.php
@@ -659,7 +659,7 @@ class Blogger_Import {
 			$this->save_vars();
 		}
 
-		$directions = __('All posts were imported with the current user as author. Use this form to move each Blogger user&#8217;s posts to a different WordPress user. You may <a href="users.php">add users</a> and then return to this page and complete the user mapping. This form may be used as many times as you like until you activate the &#8220;Restart&#8221; function below.');
+		$directions = sprintf( __('All posts were imported with the current user as author. Use this form to move each Blogger user&#8217;s posts to a different WordPress user. You may <a href="%s">add users</a> and then return to this page and complete the user mapping. This form may be used as many times as you like until you activate the &#8220;Restart&#8221; function below.'), 'users.php' );
 		$heading = __('Author mapping');
 		$blogtitle = "{$blog['title']} ({$blog['host']})";
 		$mapthis = __('Blogger username');
diff --git a/wp-admin/import/greymatter.php b/wp-admin/import/greymatter.php
index 885f05c995..beff019503 100644
--- a/wp-admin/import/greymatter.php
+++ b/wp-admin/import/greymatter.php
@@ -42,7 +42,7 @@ class GM_Import {
 <ul>
 <li><?php _e('Parse gm-counter.cgi, gm-banlist.cgi, gm-cplog.cgi (you can make a CP log hack if you really feel like it, but I question the need of a CP log).') ?></li>
 <li><?php _e('Import gm-templates.') ?></li>
-<li><?php _e("Doesn't keep entries on top.")?></li>
+<li><?php _e("Doesn&#8217;t keep entries on top.")?></li>
 </ul>
 <p>&nbsp;</p>
 
diff --git a/wp-admin/import/livejournal.php b/wp-admin/import/livejournal.php
index 049a42c8c7..b2f7936ca0 100644
--- a/wp-admin/import/livejournal.php
+++ b/wp-admin/import/livejournal.php
@@ -490,7 +490,7 @@ class LJ_API_Import {
 		update_option( 'ljapi_maxid',      $maxid );
 		update_option( 'ljapi_highest_id', $highest_id );
 
-		echo '<p>' . __( ' Comment metadata downloaded successfully, proceeding with comment bodies...' ) . '</p>';
+		echo '<p>' . __( 'Comment metadata downloaded successfully, proceeding with comment bodies...' ) . '</p>';
 
 		return true;
 	}
diff --git a/wp-admin/import/mt.php b/wp-admin/import/mt.php
index c570fc91e5..724eece8f5 100644
--- a/wp-admin/import/mt.php
+++ b/wp-admin/import/mt.php
@@ -59,7 +59,7 @@ class MT_Import {
 		global $wpdb;
 		$users = $wpdb->get_results("SELECT * FROM $wpdb->users ORDER BY ID");
 ?><select name="userselect[<?php echo $n; ?>]">
-	<option value="#NONE#"><?php _e('- Select -') ?></option>
+	<option value="#NONE#"><?php _e('&mdash; Select &mdash;') ?></option>
 	<?php
 
 
@@ -269,7 +269,7 @@ class MT_Import {
 			 // Add tags or keywords
 			if ( 1 < strlen($post->post_keywords) ) {
 			 	// Keywords exist.
-				printf(__('<br />Adding tags <i>%s</i>...'), stripslashes($post->post_keywords));
+				printf('<br />'.__('Adding tags <em>%s</em>...'), stripslashes($post->post_keywords));
 				wp_add_post_tags($post_id, $post->post_keywords);
 			}
 		}
diff --git a/wp-admin/import/rss.php b/wp-admin/import/rss.php
index 0e0928cc49..214b5ff3b7 100644
--- a/wp-admin/import/rss.php
+++ b/wp-admin/import/rss.php
@@ -139,7 +139,7 @@ class RSS_Import {
 
 				if (0 != count($categories))
 					wp_create_categories($categories, $post_id);
-				_e('Done !');
+				_e('Done!');
 			}
 			echo '</li>';
 		}
diff --git a/wp-admin/includes/class-wp-upgrader.php b/wp-admin/includes/class-wp-upgrader.php
index 98464dd6ea..717e3dde0f 100644
--- a/wp-admin/includes/class-wp-upgrader.php
+++ b/wp-admin/includes/class-wp-upgrader.php
@@ -43,7 +43,7 @@ class WP_Upgrader {
 	function generic_strings() {
 		$this->strings['bad_request'] = __('Invalid Data provided.');
 		$this->strings['fs_unavailable'] = __('Could not access filesystem.');
-		$this->strings['fs_error'] = __('Filesystem error');
+		$this->strings['fs_error'] = __('Filesystem error.');
 		$this->strings['fs_no_root_dir'] = __('Unable to locate WordPress Root directory.');
 		$this->strings['fs_no_content_dir'] = __('Unable to locate WordPress Content directory (wp-content).');
 		$this->strings['fs_no_plugins_dir'] = __('Unable to locate WordPress Plugin directory.');
@@ -54,7 +54,7 @@ class WP_Upgrader {
 		$this->strings['installing_package'] = __('Installing the latest version&#8230;');
 		$this->strings['folder_exists'] = __('Destination folder already exists.');
 		$this->strings['mkdir_failed'] = __('Could not create directory.');
-		$this->strings['bad_package'] = __('Incompatible Archive');
+		$this->strings['bad_package'] = __('Incompatible Archive.');
 
 		$this->strings['maintenance_start'] = __('Enabling Maintenance mode&#8230;');
 		$this->strings['maintenance_end'] = __('Disabling Maintenance mode&#8230;');
@@ -468,7 +468,7 @@ class Plugin_Upgrader extends WP_Upgrader {
 		$i = 1;
 		foreach ( $plugins as $plugin ) {
 
-			$this->show_before = sprintf( '<h4>' . __('Updating plugin %1$d of %2$d...') . '</h4>', $i, $all );
+			$this->show_before = sprintf( '<h4>' . __('Updating plugin %1$d of %2$d&#8230;') . '</h4>', $i, $all );
 			$i++;
 
 			if ( !isset( $current->response[ $plugin ] ) ) {
diff --git a/wp-admin/includes/dashboard.php b/wp-admin/includes/dashboard.php
index 74f6d9ec9f..ff2fcba623 100644
--- a/wp-admin/includes/dashboard.php
+++ b/wp-admin/includes/dashboard.php
@@ -582,7 +582,10 @@ function _wp_dashboard_recent_comments_row( &$comment, $show_date = true ) {
 			<?php echo get_avatar( $comment, 50 ); ?>
 
 			<div class="dashboard-comment-wrap">
-			<h4 class="comment-meta"><?php printf( __( 'From %1$s on %2$s%3$s' ), '<cite class="comment-author">' . get_comment_author_link() . '</cite>', $comment_post_link.' '.$comment_link, ' <span class="approve">' . __( '[Pending]' ) . '</span>' ); ?></h4>
+			<h4 class="comment-meta">
+				<?php printf( /* translators: 1: comment author, 2: post link, 3: notification if the comment is pending */__( 'From %1$s on %2$s%3$s' ),
+					'<cite class="comment-author">' . get_comment_author_link() . '</cite>', $comment_post_link.' '.$comment_link, ' <span class="approve">' . __( '[Pending]' ) . '</span>' ); ?>
+			</h4>
 
 			<?php
 			else :
diff --git a/wp-admin/includes/file.php b/wp-admin/includes/file.php
index c2f0ab6b99..d1eea87f12 100644
--- a/wp-admin/includes/file.php
+++ b/wp-admin/includes/file.php
@@ -452,15 +452,15 @@ function wp_handle_sideload( &$file, $overrides = false ) {
 function download_url( $url ) {
 	//WARNING: The file is not automatically deleted, The script must unlink() the file.
 	if ( ! $url )
-		return new WP_Error('http_no_url', __('Invalid URL Provided'));
+		return new WP_Error('http_no_url', __('Invalid URL Provided.'));
 
 	$tmpfname = wp_tempnam($url);
 	if ( ! $tmpfname )
-		return new WP_Error('http_no_file', __('Could not create Temporary file'));
+		return new WP_Error('http_no_file', __('Could not create Temporary file.'));
 
 	$handle = @fopen($tmpfname, 'wb');
 	if ( ! $handle )
-		return new WP_Error('http_no_file', __('Could not create Temporary file'));
+		return new WP_Error('http_no_file', __('Could not create Temporary file.'));
 
 	$response = wp_remote_get($url, array('timeout' => 300));
 
@@ -512,10 +512,10 @@ function unzip_file($file, $to) {
 
 	// Is the archive valid?
 	if ( false == ($archive_files = $archive->extract(PCLZIP_OPT_EXTRACT_AS_STRING)) )
-		return new WP_Error('incompatible_archive', __('Incompatible archive'), $archive->errorInfo(true));
+		return new WP_Error('incompatible_archive', __('Incompatible Archive.'), $archive->errorInfo(true));
 
 	if ( 0 == count($archive_files) )
-		return new WP_Error('empty_archive', __('Empty archive'));
+		return new WP_Error('empty_archive', __('Empty archive.'));
 
 	$path = explode('/', untrailingslashit($to));
 	for ( $i = count($path); $i > 0; $i-- ) { //>0 = first element is empty allways for paths starting with '/'
@@ -524,7 +524,7 @@ function unzip_file($file, $to) {
 			for ( $i = $i + 1; $i <= count($path); $i++ ) {
 				$tmppath = implode('/', array_slice($path, 0, $i) );
 				if ( ! $fs->mkdir($tmppath, FS_CHMOD_DIR) )
-					return new WP_Error('mkdir_failed', __('Could not create directory'), $tmppath);
+					return new WP_Error('mkdir_failed', __('Could not create directory.'), $tmppath);
 			}
 			break; //Exit main for loop
 		}
@@ -542,7 +542,7 @@ function unzip_file($file, $to) {
 				for ( $i = $i + 1; $i <= count($path); $i++ ) { //< count() no file component please.
 					$tmppath = $to . implode('/', array_slice($path, 0, $i) );
 					if ( ! $fs->is_dir($tmppath) && ! $fs->mkdir($tmppath, FS_CHMOD_DIR) )
-						return new WP_Error('mkdir_failed', __('Could not create directory'), $tmppath);
+						return new WP_Error('mkdir_failed', __('Could not create directory.'), $tmppath);
 				}
 				break; //Exit main for loop
 			}
@@ -551,7 +551,7 @@ function unzip_file($file, $to) {
 		// We've made sure the folders are there, so let's extract the file now:
 		if ( ! $file['folder'] ) {
 			if ( !$fs->put_contents( $to . $file['filename'], $file['content'], FS_CHMOD_FILE) )
-				return new WP_Error('copy_failed', __('Could not copy file'), $to . $file['filename']);
+				return new WP_Error('copy_failed', __('Could not copy file.'), $to . $file['filename']);
 		}
 	}
 	return true;
@@ -581,13 +581,13 @@ function copy_dir($from, $to) {
 				// If copy failed, chmod file to 0644 and try again.
 				$wp_filesystem->chmod($to . $filename, 0644);
 				if ( ! $wp_filesystem->copy($from . $filename, $to . $filename, true) )
-					return new WP_Error('copy_failed', __('Could not copy file'), $to . $filename);
+					return new WP_Error('copy_failed', __('Could not copy file.'), $to . $filename);
 			}
 			$wp_filesystem->chmod($to . $filename, FS_CHMOD_FILE);
 		} elseif ( 'd' == $fileinfo['type'] ) {
 			if ( !$wp_filesystem->is_dir($to . $filename) ) {
 				if ( !$wp_filesystem->mkdir($to . $filename, FS_CHMOD_DIR) )
-					return new WP_Error('mkdir_failed', __('Could not create directory'), $to . $filename);
+					return new WP_Error('mkdir_failed', __('Could not create directory.'), $to . $filename);
 			}
 			$result = copy_dir($from . $filename, $to . $filename);
 			if ( is_wp_error($result) )
diff --git a/wp-admin/includes/image-edit.php b/wp-admin/includes/image-edit.php
index b6d0940e09..d1fdecb218 100644
--- a/wp-admin/includes/image-edit.php
+++ b/wp-admin/includes/image-edit.php
@@ -99,7 +99,7 @@ function wp_image_editor($post_id, $msg = false) {
 		<p><?php _e('Discard any changes and restore the original image.');
 
 		if ( !defined('IMAGE_EDIT_OVERWRITE') || !IMAGE_EDIT_OVERWRITE )
-			_e(' Previously edited copies of the image will not be deleted.');
+			echo ' '.__('Previously edited copies of the image will not be deleted.');
 
 		?></p>
 		<div class="imgedit-submit">
@@ -118,7 +118,7 @@ function wp_image_editor($post_id, $msg = false) {
 		<a class="imgedit-help-toggle" onclick="imageEdit.toggleHelp(this);return false;" href="#"><?php _e('(help)'); ?></a>
 		<div class="imgedit-help">
 		<p><?php _e('The image can be cropped by clicking on it and dragging to select the desired part. While dragging the dimensions of the selection are displayed below.'); ?></p>
-		<strong><?php _e('Keyboard shortcuts'); ?></strong>
+		<strong><?php _e('Keyboard Shortcuts'); ?></strong>
 		<ul>
 		<li><?php _e('Arrow: move by 10px'); ?></li>
 		<li><?php _e('Shift + arrow: move by 1px'); ?></li>
diff --git a/wp-admin/includes/media.php b/wp-admin/includes/media.php
index f8660f8d4b..fc0160a1ab 100644
--- a/wp-admin/includes/media.php
+++ b/wp-admin/includes/media.php
@@ -819,7 +819,7 @@ function image_align_input_fields( $post, $checked = '' ) {
 function image_size_input_fields( $post, $check = '' ) {
 
 		// get a list of the actual pixel dimensions of each possible intermediate version of this image
-		$size_names = array('thumbnail' => __('Thumbnail'), 'medium' => __('Medium'), 'large' => __('Large'), 'full' => __('Full size'));
+		$size_names = array('thumbnail' => __('Thumbnail'), 'medium' => __('Medium'), 'large' => __('Large'), 'full' => __('Full Size'));
 
 		if ( empty($check) )
 			$check = get_user_setting('imgsize', 'medium');
@@ -848,7 +848,7 @@ function image_size_input_fields( $post, $check = '' ) {
 			$html .= "<label for='{$css_id}'>$label</label>";
 			// only show the dimensions if that choice is available
 			if ( $enabled )
-				$html .= " <label for='{$css_id}' class='help'>" . sprintf( __("(%d&nbsp;&times;&nbsp;%d)"), $downsize[1], $downsize[2] ). "</label>";
+				$html .= " <label for='{$css_id}' class='help'>" . sprintf( "(%d&nbsp;&times;&nbsp;%d)", $downsize[1], $downsize[2] ). "</label>";
 
 			$html .= '</div>';
 
@@ -912,7 +912,7 @@ function image_attachment_fields_to_edit($form_fields, $post) {
 
 		$form_fields['image_alt'] = array(
 			'value' => $alt,
-			'label' => __('Alternate text'),
+			'label' => __('Alternate Text'),
 			'helps' => __('Alt text for the image, e.g. &#8220;The Mona Lisa&#8221;')
 		);
 
@@ -1200,7 +1200,7 @@ function get_media_item( $attachment_id, $args = null ) {
 	$image_edit_button = '';
 	if ( gd_edit_image_support( $post->post_mime_type ) ) {
 		$nonce = wp_create_nonce( "image_editor-$post->ID" );
-		$image_edit_button = "<input type='button' id='imgedit-open-btn-$post->ID' onclick='imageEdit.open( $post->ID, \"$nonce\" )' class='button' value='" . esc_attr__( 'Edit image' ) . "' /> <img src='images/wpspin_light.gif' class='imgedit-wait-spin' alt='' />";
+		$image_edit_button = "<input type='button' id='imgedit-open-btn-$post->ID' onclick='imageEdit.open( $post->ID, \"$nonce\" )' class='button' value='" . esc_attr__( 'Edit Image' ) . "' /> <img src='images/wpspin_light.gif' class='imgedit-wait-spin' alt='' />";
 	}
 
 	$attachment_url = get_permalink( $attachment_id );
@@ -1772,14 +1772,14 @@ jQuery(function($){
 	</th>
 	<td class="field">
 		<select id="columns" name="columns">
-			<option value="2"><?php _e('2'); ?></option>
-			<option value="3" selected="selected"><?php _e('3'); ?></option>
-			<option value="4"><?php _e('4'); ?></option>
-			<option value="5"><?php _e('5'); ?></option>
-			<option value="6"><?php _e('6'); ?></option>
-			<option value="7"><?php _e('7'); ?></option>
-			<option value="8"><?php _e('8'); ?></option>
-			<option value="9"><?php _e('9'); ?></option>
+			<option value="2">2</option>
+			<option value="3" selected="selected">3</option>
+			<option value="4">4</option>
+			<option value="5">5</option>
+			<option value="6">6</option>
+			<option value="7">7</option>
+			<option value="8">8</option>
+			<option value="9">9</option>
 		</select>
 	</td>
 	</tr>
diff --git a/wp-admin/includes/meta-boxes.php b/wp-admin/includes/meta-boxes.php
index cd7955e9f8..87dab8cd5a 100644
--- a/wp-admin/includes/meta-boxes.php
+++ b/wp-admin/includes/meta-boxes.php
@@ -378,7 +378,7 @@ function post_comment_status_meta_box($post) {
 <input name="advanced_view" type="hidden" value="1" />
 <p class="meta-options">
 	<label for="comment_status" class="selectit"><input name="comment_status" type="checkbox" id="comment_status" value="open" <?php checked($post->comment_status, 'open'); ?> /><?php _e('Allow Comments.') ?></label><br />
-	<label for="ping_status" class="selectit"><input name="ping_status" type="checkbox" id="ping_status" value="open" <?php checked($post->ping_status, 'open'); ?> /><?php printf( __('Allow <a href="%s" target="_blank">trackbacks and pingbacks</a> on this page.'),_x('http://codex.wordpress.org/Introduction_to_Blogging#Managing_Comments','Url to codex article on Managing Comments')); ?></label>
+	<label for="ping_status" class="selectit"><input name="ping_status" type="checkbox" id="ping_status" value="open" <?php checked($post->ping_status, 'open'); ?> /><?php printf( __('Allow <a href="%s" target="_blank">trackbacks and pingbacks</a> on this page.'),__('http://codex.wordpress.org/Introduction_to_Blogging#Managing_Comments')); ?></label>
 </p>
 <?php
 }
@@ -616,13 +616,13 @@ function link_target_meta_box($link) { ?>
 <fieldset><legend class="screen-reader-text"><span><?php _e('Target') ?></span></legend>
 <p><label for="link_target_blank" class="selectit">
 <input id="link_target_blank" type="radio" name="link_target" value="_blank" <?php echo ( isset( $link->link_target ) && ($link->link_target == '_blank') ? 'checked="checked"' : ''); ?> />
-<?php _e('<code>_blank</code> - new window or tab.'); ?></label></p>
+<?php _e('<code>_blank</code> &mdash; new window or tab.'); ?></label></p>
 <p><label for="link_target_top" class="selectit">
 <input id="link_target_top" type="radio" name="link_target" value="_top" <?php echo ( isset( $link->link_target ) && ($link->link_target == '_top') ? 'checked="checked"' : ''); ?> />
-<?php _e('<code>_top</code> - current window or tab, with no frames.'); ?></label></p>
+<?php _e('<code>_top</code> &mdash; current window or tab, with no frames.'); ?></label></p>
 <p><label for="link_target_none" class="selectit">
 <input id="link_target_none" type="radio" name="link_target" value="" <?php echo ( isset( $link->link_target ) && ($link->link_target == '') ? 'checked="checked"' : ''); ?> />
-<?php _e('<code>_none</code> - same window or tab.'); ?></label></p>
+<?php _e('<code>_none</code> &mdash; same window or tab.'); ?></label></p>
 </fieldset>
 <p><?php _e('Choose the target frame for your link.'); ?></p>
 <?php
diff --git a/wp-admin/includes/plugin-install.php b/wp-admin/includes/plugin-install.php
index 4886014771..f01fad46c3 100644
--- a/wp-admin/includes/plugin-install.php
+++ b/wp-admin/includes/plugin-install.php
@@ -215,7 +215,7 @@ add_action('install_plugins_upload', 'install_plugins_upload', 10, 1);
 function install_plugins_upload( $page = 1 ) {
 ?>
 	<h4><?php _e('Install a plugin in .zip format') ?></h4>
-	<p class="install-help"><?php _e('If you have a plugin in a .zip format, You may install it by uploading it here.') ?></p>
+	<p class="install-help"><?php _e('If you have a plugin in a .zip format, you may install it by uploading it here.') ?></p>
 	<form method="post" enctype="multipart/form-data" action="<?php echo admin_url('update.php?action=upload-plugin') ?>">
 		<?php wp_nonce_field( 'plugin-upload') ?>
 		<label class="screen-reader-text" for="pluginzip"><?php _e('Plugin zip file'); ?></label>
@@ -503,7 +503,7 @@ function install_plugin_information() {
 			endswitch; ?>
 		</p>
 		<?php endif; ?>
-		<h2 class="mainheader"><?php _e('FYI') ?></h2>
+		<h2 class="mainheader"><?php /* translators: For Your Information */ _e('FYI') ?></h2>
 		<ul>
 <?php if ( ! empty($api->version) ) : ?>
 			<li><strong><?php _e('Version:') ?></strong> <?php echo $api->version ?></li>
diff --git a/wp-admin/includes/plugin.php b/wp-admin/includes/plugin.php
index c2183babb6..537d97ca8f 100644
--- a/wp-admin/includes/plugin.php
+++ b/wp-admin/includes/plugin.php
@@ -436,7 +436,7 @@ function delete_plugins($plugins, $redirect = '' ) {
 		return new WP_Error('fs_unavailable', __('Could not access filesystem.'));
 
 	if ( is_wp_error($wp_filesystem->errors) && $wp_filesystem->errors->get_error_code() )
-		return new WP_Error('fs_error', __('Filesystem error'), $wp_filesystem->errors);
+		return new WP_Error('fs_error', __('Filesystem error.'), $wp_filesystem->errors);
 
 	//Get the base plugin folder
 	$plugins_dir = $wp_filesystem->wp_plugins_dir();
@@ -464,7 +464,7 @@ function delete_plugins($plugins, $redirect = '' ) {
 	}
 
 	if ( ! empty($errors) )
-		return new WP_Error('could_not_remove_plugin', sprintf(__('Could not fully remove the plugin(s) %s'), implode(', ', $errors)) );
+		return new WP_Error('could_not_remove_plugin', sprintf(__('Could not fully remove the plugin(s) %s.'), implode(', ', $errors)) );
 
 	// Force refresh of plugin update information
 	if ( $current = get_site_transient('update_plugins') ) {
diff --git a/wp-admin/includes/template.php b/wp-admin/includes/template.php
index fbc63fe38a..2468e1f414 100644
--- a/wp-admin/includes/template.php
+++ b/wp-admin/includes/template.php
@@ -1063,7 +1063,7 @@ function inline_edit_row( $screen ) {
 		if ( $authors && count( $authors ) > 1 ) :
 			$users_opt = array('include' => $authors, 'name' => 'post_author', 'class'=> 'authors', 'multi' => 1, 'echo' => 0);
 			if ( $bulk )
-				$users_opt['show_option_none'] = __('- No Change -');
+				$users_opt['show_option_none'] = __('&mdash; No Change &mdash;');
 			$authors_dropdown  = '<label>';
 			$authors_dropdown .= '<span class="title">' . __( 'Author' ) . '</span>';
 			$authors_dropdown .= wp_dropdown_users( $users_opt );
@@ -1124,7 +1124,7 @@ function inline_edit_row( $screen ) {
 <?php
 	$dropdown_args = array('selected' => $post->post_parent, 'name' => 'post_parent', 'show_option_none' => __('Main Page (no parent)'), 'option_none_value' => 0, 'sort_column'=> 'menu_order, post_title');
 	if ( $bulk )
-		$dropdown_args['show_option_no_change'] =  __('- No Change -');
+		$dropdown_args['show_option_no_change'] =  __('&mdash; No Change &mdash;');
 	$dropdown_args = apply_filters('quick_edit_dropdown_pages_args', $dropdown_args);
 	wp_dropdown_pages($dropdown_args);
 ?>
@@ -1143,7 +1143,7 @@ function inline_edit_row( $screen ) {
 			<span class="title"><?php _e( 'Template' ); ?></span>
 			<select name="page_template">
 <?php	if ( $bulk ) : ?>
-				<option value="-1"><?php _e('- No Change -'); ?></option>
+				<option value="-1"><?php _e('&mdash; No Change &mdash;'); ?></option>
 <?php	endif; // $bulk ?>
 				<option value="default"><?php _e( 'Default Template' ); ?></option>
 				<?php page_template_dropdown() ?>
@@ -1165,7 +1165,7 @@ function inline_edit_row( $screen ) {
 		<label class="alignleft">
 			<span class="title"><?php _e( 'Comments' ); ?></span>
 			<select name="comment_status">
-				<option value=""><?php _e('- No Change -'); ?></option>
+				<option value=""><?php _e('&mdash; No Change &mdash;'); ?></option>
 				<option value="open"><?php _e('Allow'); ?></option>
 				<option value="closed"><?php _e('Do not allow'); ?></option>
 			</select>
@@ -1174,7 +1174,7 @@ function inline_edit_row( $screen ) {
 		<label class="alignright">
 			<span class="title"><?php _e( 'Pings' ); ?></span>
 			<select name="ping_status">
-				<option value=""><?php _e('- No Change -'); ?></option>
+				<option value=""><?php _e('&mdash; No Change &mdash;'); ?></option>
 				<option value="open"><?php _e('Allow'); ?></option>
 				<option value="closed"><?php _e('Do not allow'); ?></option>
 			</select>
@@ -1203,7 +1203,7 @@ function inline_edit_row( $screen ) {
 				<span class="title"><?php _e( 'Status' ); ?></span>
 				<select name="_status">
 <?php if ( $bulk ) : ?>
-					<option value="-1"><?php _e('- No Change -'); ?></option>
+					<option value="-1"><?php _e('&mdash; No Change &mdash;'); ?></option>
 <?php endif; // $bulk ?>
 				<?php if ( $can_publish ) : // Contributors only get "Unpublished" and "Pending Review" ?>
 					<option value="publish"><?php _e( 'Published' ); ?></option>
@@ -1224,7 +1224,7 @@ function inline_edit_row( $screen ) {
 			<label class="alignright">
 				<span class="title"><?php _e( 'Sticky' ); ?></span>
 				<select name="sticky">
-					<option value="-1"><?php _e( '- No Change -' ); ?></option>
+					<option value="-1"><?php _e( '&mdash; No Change &mdash;' ); ?></option>
 					<option value="sticky"><?php _e( 'Sticky' ); ?></option>
 					<option value="unsticky"><?php _e( 'Not Sticky' ); ?></option>
 				</select>
@@ -1964,7 +1964,7 @@ function user_row( $user_object, $style = '', $role = '' ) {
 				$r .= "<td $attributes>$user_object->first_name $user_object->last_name</td>";
 				break;
 			case 'email':
-				$r .= "<td $attributes><a href='mailto:$email' title='" . sprintf( __('e-mail: %s' ), $email ) . "'>$email</a></td>";
+				$r .= "<td $attributes><a href='mailto:$email' title='" . sprintf( __('E-mail: %s' ), $email ) . "'>$email</a></td>";
 				break;
 			case 'role':
 				$r .= "<td $attributes>$role_name</td>";
@@ -2146,13 +2146,16 @@ function _wp_comment_row( $comment_id, $mode, $comment_status, $checkbox = true,
 			case 'comment':
 				echo "<td $attributes>";
 				echo '<div id="submitted-on">';
-				printf( __( '<a href="%1$s">%2$s at %3$s</a>' ), $comment_url, get_comment_date( __('Y/m/d') ), get_comment_date( __( 'g:ia' ) ) );
+				/* translators: 2: comment date, 3: comment time */
+				printf( __( '<a href="%1$s">%2$s at %3$s</a>' ), $comment_url,
+					/* translators: comment date format. See http://php.net/date */ get_comment_date( __('Y/m/d') ),
+					/* translators: comment time format. See http://php.net/date */ get_comment_date( get_option( 'time_format' ) ) );
 
 				if ( $comment->comment_parent ) {
 					$parent = get_comment( $comment->comment_parent );
 					$parent_link = esc_url( get_comment_link( $comment->comment_parent ) );
 					$name = apply_filters( 'get_comment_author', $parent->comment_author ); // there's no API function for this
-					printf( __( ' | In reply to <a href="%1$s">%2$s</a>.' ), $parent_link, $name );
+					printf( ' | '.__( 'In reply to <a href="%1$s">%2$s</a>.' ), $parent_link, $name );
 				}
 
 				echo '</div>';
@@ -2544,7 +2547,7 @@ function meta_form() {
 	if ( $keys )
 		natcasesort($keys);
 ?>
-<p><strong><?php _e( 'Add new custom field:' ) ?></strong></p>
+<p><strong><?php _e( 'Add New Custom Field:' ) ?></strong></p>
 <table id="newmeta">
 <thead>
 <tr>
@@ -2558,7 +2561,7 @@ function meta_form() {
 <td id="newmetaleft" class="left">
 <?php if ( $keys ) { ?>
 <select id="metakeyselect" name="metakeyselect" tabindex="7">
-<option value="#NONE#"><?php _e( '- Select -' ); ?></option>
+<option value="#NONE#"><?php _e( '&mdash; Select &mdash;' ); ?></option>
 <?php
 
 	foreach ( $keys as $key ) {
diff --git a/wp-admin/includes/theme.php b/wp-admin/includes/theme.php
index 67f2e6f904..a6bfe3d8ad 100644
--- a/wp-admin/includes/theme.php
+++ b/wp-admin/includes/theme.php
@@ -79,7 +79,7 @@ function delete_theme($template) {
 		return new WP_Error('fs_unavailable', __('Could not access filesystem.'));
 
 	if ( is_wp_error($wp_filesystem->errors) && $wp_filesystem->errors->get_error_code() )
-		return new WP_Error('fs_error', __('Filesystem error'), $wp_filesystem->errors);
+		return new WP_Error('fs_error', __('Filesystem error.'), $wp_filesystem->errors);
 
 	//Get the base plugin folder
 	$themes_dir = $wp_filesystem->wp_themes_dir();
@@ -94,7 +94,7 @@ function delete_theme($template) {
 	$deleted = $wp_filesystem->delete($theme_dir, true);
 
 	if ( ! $deleted )
-		return new WP_Error('could_not_remove_theme', sprintf(__('Could not fully remove the theme %s'), $template) );
+		return new WP_Error('could_not_remove_theme', sprintf(__('Could not fully remove the theme %s.'), $template) );
 
 	// Force refresh of theme update information
 	delete_site_transient('update_themes');
diff --git a/wp-admin/link-manager.php b/wp-admin/link-manager.php
index c39ca2f4fe..7a6fb29420 100644
--- a/wp-admin/link-manager.php
+++ b/wp-admin/link-manager.php
@@ -72,7 +72,7 @@ switch ($order_by) {
 
 <div class="wrap nosubsub">
 <?php screen_icon(); ?>
-<h2><?php echo esc_html( $title ); ?> <a href="link-add.php" class="button add-new-h2"><?php esc_html_e('Add New'); ?></a> <?php
+<h2><?php echo esc_html( $title ); ?> <a href="link-add.php" class="button add-new-h2"><?php esc_html_x('Add New', 'link'); ?></a> <?php
 if ( isset($_GET['s']) && $_GET['s'] )
 	printf( '<span class="subtitle">' . __('Search results for &#8220;%s&#8221;') . '</span>', esc_html( stripslashes($_GET['s']) ) ); ?>
 </h2>
diff --git a/wp-admin/maint/repair.php b/wp-admin/maint/repair.php
index 96e387e1bc..d8934caf46 100644
--- a/wp-admin/maint/repair.php
+++ b/wp-admin/maint/repair.php
@@ -19,7 +19,7 @@ header( 'Content-Type: text/html; charset=utf-8' );
 <?php
 
 if ( !defined('WP_ALLOW_REPAIR') ) {
-	_e("<p>To allow use of this page to automatically repair database problems, please add the following line to your wp-config.php file.  Once this line is added to your config, reload this page.</p><code>define('WP_ALLOW_REPAIR', true);</code>");
+	echo '<p>'.__('To allow use of this page to automatically repair database problems, please add the following line to your wp-config.php file.  Once this line is added to your config, reload this page.')."</p><code>define('WP_ALLOW_REPAIR', true);</code>";
 } elseif ( isset($_GET['repair']) ) {
 	$problems = array();
 	check_admin_referer('repair_db');
@@ -66,13 +66,13 @@ if ( !defined('WP_ALLOW_REPAIR') ) {
 	}
 
 	if ( !empty($problems) ) {
-		printf(__('<p>Some database problems could not be repaired. Please copy-and-paste the following list of errors to the <a href="%s">WordPress support forums</a> to get additional assistance.</p>'), 'http://wordpress.org/support/forum/3');
+		printf('<p>'.__('Some database problems could not be repaired. Please copy-and-paste the following list of errors to the <a href="%s">WordPress support forums</a> to get additional assistance.').'</p>', 'http://wordpress.org/support/forum/3');
 		$problem_output = array();
 		foreach ( $problems as $table => $problem )
 			$problem_output[] = "$table: $problem";
 		echo '<textarea name="errors" id="errors" rows="20" cols="60">' . format_to_edit(implode("\n", $problem_output)) . '</textarea>';
 	} else {
-		_e("<p>Repairs complete.  Please remove the following line from wp-config.php to prevent this page from being used by unauthorized users.</p><code>define('WP_ALLOW_REPAIR', true);</code>");
+		echo '<p>'.__('Repairs complete.  Please remove the following line from wp-config.php to prevent this page from being used by unauthorized users.')."</p><code>define('WP_ALLOW_REPAIR', true);</code>";
 	}
 } else {
 	if ( isset($_GET['referrer']) && 'is_blog_installed' == $_GET['referrer'] )
diff --git a/wp-admin/menu.php b/wp-admin/menu.php
index 614cfd2cc2..de10bf79eb 100644
--- a/wp-admin/menu.php
+++ b/wp-admin/menu.php
@@ -65,7 +65,7 @@ $menu[10] = array( __('Media'), 'upload_files', 'upload.php', '', 'menu-top', 'm
 $menu[15] = array( __('Links'), 'manage_links', 'link-manager.php', '', 'menu-top', 'menu-links', 'div' );
 	$submenu['link-manager.php'][5] = array( __('Edit'), 'manage_links', 'link-manager.php' );
 	/* translators: add new links */
-	$submenu['link-manager.php'][10] = array( _x('Add New', 'links'), 'manage_links', 'link-add.php' );
+	$submenu['link-manager.php'][10] = array( _x('Add New', 'link'), 'manage_links', 'link-add.php' );
 	$submenu['link-manager.php'][15] = array( __('Link Categories'), 'manage_categories', 'edit-link-categories.php' );
 
 $menu[20] = array( __('Pages'), 'edit_pages', 'edit.php?post_type=page', '', 'menu-top', 'menu-pages', 'div' );
@@ -104,7 +104,7 @@ $menu[59] = array( '', 'read', 'separator2', '', 'wp-menu-separator' );
 $menu[60] = array( __('Appearance'), 'switch_themes', 'themes.php', '', 'menu-top', 'menu-appearance', 'div' );
 	$submenu['themes.php'][5]  = array(__('Themes'), 'switch_themes', 'themes.php');
 	if ( !is_multisite() )
-		$submenu['themes.php'][10] = array(__('Editor'), 'edit_themes', 'theme-editor.php');
+		$submenu['themes.php'][10] = array(_x('Editor', 'theme editor'), 'edit_themes', 'theme-editor.php');
 	$submenu['themes.php'][15] = array(__('Add New Themes'), 'install_themes', 'theme-install.php');
 
 $update_plugins = get_site_transient( 'update_plugins' );
@@ -119,7 +119,7 @@ if ( is_super_admin() || is_multisite() && $menu_perms['plugins'] ) {
 		/* translators: add new plugin */
 		$submenu['plugins.php'][10] = array(_x('Add New', 'plugin'), 'install_plugins', 'plugin-install.php');
 		if ( !is_multisite() )
-			$submenu['plugins.php'][15] = array( __('Editor'), 'edit_plugins', 'plugin-editor.php' );
+			$submenu['plugins.php'][15] = array( _x('Editor', 'plugin editor'), 'edit_plugins', 'plugin-editor.php' );
 }
 
 if ( current_user_can('edit_users') )
@@ -146,7 +146,7 @@ $menu[75] = array( __('Tools'), 'read', 'tools.php', '', 'menu-top', 'menu-tools
 		$submenu['tools.php'][20] = array( __('Upgrade'), 'install_plugins',  'update-core.php');
 
 $menu[80] = array( __('Settings'), 'manage_options', 'options-general.php', '', 'menu-top', 'menu-settings', 'div' );
-	$submenu['options-general.php'][10] = array(__('General'), 'manage_options', 'options-general.php');
+	$submenu['options-general.php'][10] = array(_x('General', 'settings screen'), 'manage_options', 'options-general.php');
 	$submenu['options-general.php'][15] = array(__('Writing'), 'manage_options', 'options-writing.php');
 	$submenu['options-general.php'][20] = array(__('Reading'), 'manage_options', 'options-reading.php');
 	$submenu['options-general.php'][25] = array(__('Discussion'), 'manage_options', 'options-discussion.php');
diff --git a/wp-admin/options-discussion.php b/wp-admin/options-discussion.php
index 77ee6b67f6..8f3a2df720 100644
--- a/wp-admin/options-discussion.php
+++ b/wp-admin/options-discussion.php
@@ -158,7 +158,7 @@ printf( __('Comments should be displayed with the %s comments at the top of each
 <table class="form-table">
 <tr valign="top">
 <th scope="row"><?php _e('Avatar Display') ?></th>
-<td><fieldset><legend class="screen-reader-text"><span><?php _e('Avatar display') ?></span></legend>
+<td><fieldset><legend class="screen-reader-text"><span><?php _e('Avatar Display') ?></span></legend>
 <?php
 	$yesorno = array(0 => __("Don&#8217;t show Avatars"), 1 => __('Show Avatars'));
 	foreach ( $yesorno as $key => $value) {
@@ -173,7 +173,16 @@ printf( __('Comments should be displayed with the %s comments at the top of each
 <td><fieldset><legend class="screen-reader-text"><span><?php _e('Maximum Rating') ?></span></legend>
 
 <?php
-$ratings = array( 'G' => __('G &#8212; Suitable for all audiences'), 'PG' => __('PG &#8212; Possibly offensive, usually for audiences 13 and above'), 'R' => __('R &#8212; Intended for adult audiences above 17'), 'X' => __('X &#8212; Even more mature than above'));
+$ratings = array(
+	/* translators: Content suitability rating: http://bit.ly/89QxZA */
+	'G' => __('G &#8212; Suitable for all audiences'),
+	/* translators: Content suitability rating: http://bit.ly/89QxZA */
+	'PG' => __('PG &#8212; Possibly offensive, usually for audiences 13 and above'),
+	/* translators: Content suitability rating: http://bit.ly/89QxZA */
+	'R' => __('R &#8212; Intended for adult audiences above 17'),
+	/* translators: Content suitability rating: http://bit.ly/89QxZA */
+	'X' => __('X &#8212; Even more mature than above')
+);
 foreach ($ratings as $key => $rating) :
 	$selected = (get_option('avatar_rating') == $key) ? 'checked="checked"' : '';
 	echo "\n\t<label><input type='radio' name='avatar_rating' value='" . esc_attr($key) . "' $selected/> $rating</label><br />";
diff --git a/wp-admin/options-permalink.php b/wp-admin/options-permalink.php
index 8a9ce5a9f4..79374936c8 100644
--- a/wp-admin/options-permalink.php
+++ b/wp-admin/options-permalink.php
@@ -218,7 +218,7 @@ $structures = array(
 
 <table class="form-table">
 	<tr>
-		<th><label for="category_base"><?php _e('Category base'); ?></label></th>
+		<th><label for="category_base"><?php /* translators: prefix for category permalinks */ _e('Category base'); ?></label></th>
 		<td><?php if ( is_multisite() && !is_subdomain_install() && $current_site->domain.$current_site->path == $current_blog->domain.$current_blog->path ) { echo "/blog"; $category_base = str_replace( "/blog", "", $category_base ); }?> <input name="category_base" id="category_base" type="text" value="<?php echo esc_attr( $category_base ); ?>" class="regular-text code" /></td>
 	</tr>
 	<tr>
diff --git a/wp-admin/options-reading.php b/wp-admin/options-reading.php
index a6cdd370e2..b89c0e9b9b 100644
--- a/wp-admin/options-reading.php
+++ b/wp-admin/options-reading.php
@@ -41,8 +41,8 @@ include('admin-header.php');
 	</label>
 	</p>
 <ul>
-	<li><?php printf("<label for='page_on_front'>" . __('Front page: %s') . "</label>", wp_dropdown_pages( array( 'name' => 'page_on_front', 'echo' => 0, 'show_option_none' => __('- Select -'), 'selected' => get_option('page_on_front')  ) ) ); ?></li>
-	<li><?php printf("<label for='page_for_posts'>". __('Posts page: %s') . "</label>", wp_dropdown_pages( array( 'name' => 'page_for_posts','echo' => 0, 'show_option_none' => __('- Select -'), 'selected' => get_option('page_for_posts') ) ) ); ?></li>
+	<li><?php printf("<label for='page_on_front'>" . __('Front page: %s') . "</label>", wp_dropdown_pages( array( 'name' => 'page_on_front', 'echo' => 0, 'show_option_none' => __('&mdash; Select &mdash;'), 'selected' => get_option('page_on_front')  ) ) ); ?></li>
+	<li><?php printf("<label for='page_for_posts'>". __('Posts page: %s') . "</label>", wp_dropdown_pages( array( 'name' => 'page_for_posts','echo' => 0, 'show_option_none' => __('&mdash; Select &mdash;'), 'selected' => get_option('page_for_posts') ) ) ); ?></li>
 </ul>
 <?php if ( 'page' == get_option('show_on_front') && get_option('page_for_posts') == get_option('page_on_front') ) : ?>
 <div id="front-page-warning" class="updated">
diff --git a/wp-admin/options.php b/wp-admin/options.php
index 2ebdc17865..7fe96f8eb3 100644
--- a/wp-admin/options.php
+++ b/wp-admin/options.php
@@ -65,7 +65,7 @@ case 'update':
 	}
 
 	if ( !isset( $whitelist_options[ $option_page ] ) )
-		wp_die( __( 'Error! Options page not found.' ) );
+		wp_die( __( 'Error: options page not found.' ) );
 
 	if ( 'options' == $option_page ) {
 		$options = explode(',', stripslashes( $_POST[ 'page_options' ] ));
diff --git a/wp-admin/plugins.php b/wp-admin/plugins.php
index 76e7760131..a725b69ca2 100644
--- a/wp-admin/plugins.php
+++ b/wp-admin/plugins.php
@@ -183,7 +183,8 @@ if ( !empty($action) ) {
 					<ul class="ul-disc">
 						<?php
 						foreach ( $plugin_info as $plugin )
-							echo '<li>', sprintf(__('<strong>%s</strong> by <em>%s</em>'), $plugin['Name'], $plugin['Author']), '</li>';
+							/* translators: 1: plugin name, 2: plugin author */
+							echo '<li>', sprintf(__('<strong>%1$s</strong> by <em>%2$s</em>'), $plugin['Name'], $plugin['Author']), '</li>';
 						?>
 					</ul>
 				<p><?php _e('Are you sure you wish to delete these files?') ?></p>
diff --git a/wp-admin/press-this.php b/wp-admin/press-this.php
index a8bede6a63..a456b0ca37 100644
--- a/wp-admin/press-this.php
+++ b/wp-admin/press-this.php
@@ -531,7 +531,7 @@ var photostorage = false;
 	</div>
 	<div class="posting">
 		<?php if ( isset($posted) && intval($posted) ) { $post_ID = intval($posted); ?>
-		<div id="message" class="updated"><p><strong><?php _e('Your post has been saved.'); ?></strong> <a onclick="window.opener.location.replace(this.href); window.close();" href="<?php echo get_permalink( $post_ID); ?>"><?php _e('View post'); ?></a> | <a href="<?php echo get_edit_post_link( $post_ID ); ?>" onclick="window.opener.location.replace(this.href); window.close();"><?php _e('Edit post'); ?></a> | <a href="#" onclick="window.close();"><?php _e('Close Window'); ?></a></p></div>
+		<div id="message" class="updated"><p><strong><?php _e('Your post has been saved.'); ?></strong> <a onclick="window.opener.location.replace(this.href); window.close();" href="<?php echo get_permalink( $post_ID); ?>"><?php _e('View post'); ?></a> | <a href="<?php echo get_edit_post_link( $post_ID ); ?>" onclick="window.opener.location.replace(this.href); window.close();"><?php _e('Edit Post'); ?></a> | <a href="#" onclick="window.close();"><?php _e('Close Window'); ?></a></p></div>
 		<?php } ?>
 
 		<div id="titlediv">
diff --git a/wp-admin/themes.php b/wp-admin/themes.php
index 8aba22d646..0020b1e3ce 100644
--- a/wp-admin/themes.php
+++ b/wp-admin/themes.php
@@ -126,7 +126,7 @@ function theme_update_available( $theme ) {
 		else if ( empty($update['package']) )
 			printf( '<p><strong>' . __('There is a new version of %1$s available. <a href="%2$s" class="thickbox" title="%1$s">View version %3$s Details</a> <em>automatic upgrade unavailable for this theme</em>.') . '</strong></p>', $theme_name, $details_url, $update['new_version']);
 		else
-			printf( '<p><strong>' . __('There is a new version of %1$s available. <a href="%2$s" class="thickbox" title="%1$s">View version %3$s Details</a> or <a href="%4$s" %5$s >upgrade automatically</a>.') . '</strong></p>', $theme_name, $details_url, $update['new_version'], $update_url, $update_onclick );
+			printf( '<p><strong>' . __('There is a new version of %1$s available. <a href="%2$s" class="thickbox" title="%1$s">View version %3$s Details</a> or <a href="%4$s" %5$s>upgrade automatically</a>.') . '</strong></p>', $theme_name, $details_url, $update['new_version'], $update_url, $update_onclick );
 	}
 }
 
diff --git a/wp-admin/update.php b/wp-admin/update.php
index 4eab8ac0bf..9a35258ce5 100644
--- a/wp-admin/update.php
+++ b/wp-admin/update.php
@@ -156,7 +156,7 @@ if ( isset($_GET['action']) ) {
 		$submenu_file = 'theme-install.php';
 		require_once('admin-header.php');
 
-		$title = sprintf( __('Installing theme: %s'), $api->name . ' ' . $api->version );
+		$title = sprintf( __('Installing Theme: %s'), $api->name . ' ' . $api->version );
 		$nonce = 'install-theme_' . $theme;
 		$url = 'update.php?action=install-theme&theme=' . $theme;
 		$type = 'web'; //Install theme type, From Web or an Upload.
diff --git a/wp-admin/user-edit.php b/wp-admin/user-edit.php
index 1001ccbc04..2aa81296c2 100644
--- a/wp-admin/user-edit.php
+++ b/wp-admin/user-edit.php
@@ -232,12 +232,12 @@ else
 <?php endif; //!IS_PROFILE_PAGE ?>
 
 <tr>
-	<th><label for="first_name"><?php _e('First name') ?></label></th>
+	<th><label for="first_name"><?php _e('First Name') ?></label></th>
 	<td><input type="text" name="first_name" id="first_name" value="<?php echo esc_attr($profileuser->first_name) ?>" class="regular-text" /></td>
 </tr>
 
 <tr>
-	<th><label for="last_name"><?php _e('Last name') ?></label></th>
+	<th><label for="last_name"><?php _e('Last Name') ?></label></th>
 	<td><input type="text" name="last_name" id="last_name" value="<?php echo esc_attr($profileuser->last_name) ?>" class="regular-text" /></td>
 </tr>
 
diff --git a/wp-admin/user-new.php b/wp-admin/user-new.php
index 8b6d701b0e..1c9d978c7d 100644
--- a/wp-admin/user-new.php
+++ b/wp-admin/user-new.php
@@ -208,7 +208,7 @@ $new_user_send_password = !$_POST || isset($_POST['send_password']);
 	</tr>
 <?php if ( apply_filters('show_password_fields', true) ) : ?>
 	<tr class="form-field form-required">
-		<th scope="row"><label for="pass1"><?php _e('Password'); ?> <span class="description"><?php _e('(twice, required)'); ?></span></label></th>
+		<th scope="row"><label for="pass1"><?php _e('Password'); ?> <span class="description"><?php /* translators: password input field */_e('(twice, required)'); ?></span></label></th>
 		<td><input name="pass1" type="password" id="pass1" autocomplete="off" />
 		<br />
 		<input name="pass2" type="password" id="pass2" autocomplete="off" />
diff --git a/wp-admin/widgets.php b/wp-admin/widgets.php
index f91c73e69f..1b4cf2caaa 100644
--- a/wp-admin/widgets.php
+++ b/wp-admin/widgets.php
@@ -287,7 +287,7 @@ if ( isset($_GET['editwidget']) && $_GET['editwidget'] ) {
 			}
 			$selected = '';
 			echo "\t\t<select name='{$sbname}_position'>\n";
-			echo "\t\t<option value=''>" . __('-- select --') . "</option>\n";
+			echo "\t\t<option value=''>" . __('&mdash; Select &mdash;') . "</option>\n";
 			for ( $i = 1; $i <= $j; $i++ ) {
 				if ( in_array($widget_id, $sidebars_widgets[$sbname], true) )
 					$selected = selected( $i, $key + 1, false );
diff --git a/wp-includes/comment-template.php b/wp-includes/comment-template.php
index e8c7105450..f48dc91fbd 100644
--- a/wp-includes/comment-template.php
+++ b/wp-includes/comment-template.php
@@ -962,7 +962,7 @@ function comments_popup_link( $zero = false, $one = false, $more = false, $css_c
 	}
 
 	if ( post_password_required() ) {
-		echo __('Enter your password to view comments');
+		echo __('Enter your password to view comments.');
 		return;
 	}
 
@@ -1282,7 +1282,12 @@ class Walker_Comment extends Walker {
 		<br />
 <?php endif; ?>
 
-		<div class="comment-meta commentmetadata"><a href="<?php echo htmlspecialchars( get_comment_link( $comment->comment_ID ) ) ?>"><?php printf(__('%1$s at %2$s'), get_comment_date(),  get_comment_time()) ?></a><?php edit_comment_link(__('(Edit)'),'&nbsp;&nbsp;','') ?></div>
+		<div class="comment-meta commentmetadata"><a href="<?php echo htmlspecialchars( get_comment_link( $comment->comment_ID ) ) ?>">
+			<?php
+				/* translators: 1: date, 2: time */
+				printf( __('%1$s at %2$s'), get_comment_date(),  get_comment_time()) ?></a><?php edit_comment_link(__('(Edit)'),'&nbsp;&nbsp;','' );
+			?>
+		</div>
 
 		<?php comment_text() ?>
 
diff --git a/wp-includes/default-widgets.php b/wp-includes/default-widgets.php
index 1c75eba1e9..b0867556d1 100644
--- a/wp-includes/default-widgets.php
+++ b/wp-includes/default-widgets.php
@@ -406,7 +406,7 @@ class WP_Widget_Text extends WP_Widget {
 
 		<textarea class="widefat" rows="16" cols="20" id="<?php echo $this->get_field_id('text'); ?>" name="<?php echo $this->get_field_name('text'); ?>"><?php echo $text; ?></textarea>
 
-		<p><input id="<?php echo $this->get_field_id('filter'); ?>" name="<?php echo $this->get_field_name('filter'); ?>" type="checkbox" <?php checked(isset($instance['filter']) ? $instance['filter'] : 0); ?> />&nbsp;<label for="<?php echo $this->get_field_id('filter'); ?>"><?php _e('Automatically add paragraphs.'); ?></label></p>
+		<p><input id="<?php echo $this->get_field_id('filter'); ?>" name="<?php echo $this->get_field_name('filter'); ?>" type="checkbox" <?php checked(isset($instance['filter']) ? $instance['filter'] : 0); ?> />&nbsp;<label for="<?php echo $this->get_field_id('filter'); ?>"><?php _e('Automatically add paragraphs'); ?></label></p>
 <?php
 	}
 }
diff --git a/wp-includes/feed-atom-comments.php b/wp-includes/feed-atom-comments.php
index 2e7f4f360c..1ef9d310dd 100644
--- a/wp-includes/feed-atom-comments.php
+++ b/wp-includes/feed-atom-comments.php
@@ -16,7 +16,7 @@ echo '<?xml version="1.0" encoding="' . get_option('blog_charset') . '" ?' . '>'
 >
 	<title type="text"><?php
 		if ( is_singular() )
-			printf(ent2ncr(__('Comments on: %s')), get_the_title_rss());
+			printf(ent2ncr(__('Comments on %s')), get_the_title_rss());
 		elseif ( is_search() )
 			printf(ent2ncr(__('Comments for %1$s searching on %2$s')), get_bloginfo_rss( 'name' ), esc_attr(get_search_query()));
 		else
diff --git a/wp-includes/formatting.php b/wp-includes/formatting.php
index 9a9c34bf9f..ba533e4a68 100644
--- a/wp-includes/formatting.php
+++ b/wp-includes/formatting.php
@@ -1770,6 +1770,7 @@ function human_time_diff( $from, $to = '' ) {
 		if ($mins <= 1) {
 			$mins = 1;
 		}
+		/* translators: min=minute */
 		$since = sprintf(_n('%s min', '%s mins', $mins), $mins);
 	} else if (($diff <= 86400) && ($diff > 3600)) {
 		$hours = round($diff / 3600);
diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 9d5ff245ca..296842be22 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -1641,7 +1641,7 @@ function do_feed() {
 
 	$hook = 'do_feed_' . $feed;
 	if ( !has_action($hook) ) {
-		$message = sprintf( __( 'ERROR: %s is not a valid feed template' ), esc_html($feed));
+		$message = sprintf( __( 'ERROR: %s is not a valid feed template.' ), esc_html($feed));
 		wp_die($message);
 	}
 
diff --git a/wp-includes/js/tinymce/langs/wp-langs.php b/wp-includes/js/tinymce/langs/wp-langs.php
index 8320f2a5ff..d1ac555f3f 100644
--- a/wp-includes/js/tinymce/langs/wp-langs.php
+++ b/wp-includes/js/tinymce/langs/wp-langs.php
@@ -39,15 +39,15 @@ invalid_data:"' . mce_escape( __('Error: Invalid values entered, these are marke
 more_colors:"' . mce_escape( __('More colors') ) . '"
 },
 contextmenu:{
-align:"' . mce_escape( __('Alignment') ) . '",
-left:"' . mce_escape( __('Left') ) . '",
-center:"' . mce_escape( __('Center') ) . '",
-right:"' . mce_escape( __('Right') ) . '",
-full:"' . mce_escape( __('Full') ) . '"
+align:"' . mce_escape( /* translators: alignment */ __('Alignment') ) . '",
+left:"' . mce_escape( /* translators: alignment */ __('Left') ) . '",
+center:"' . mce_escape( /* translators: alignment */ __('Center') ) . '",
+right:"' . mce_escape( /* translators: alignment */ __('Right') ) . '",
+full:"' . mce_escape( /* translators: alignment */ __('Full') ) . '"
 },
 insertdatetime:{
-date_fmt:"' . mce_escape( __('%Y-%m-%d') ) . '",
-time_fmt:"' . mce_escape( __('%H:%M:%S') ) . '",
+date_fmt:"' . mce_escape( /* translators: year, month, date */ __('%Y-%m-%d') ) . '",
+time_fmt:"' . mce_escape( /* translators: hours, minutes, seconds */ __('%H:%M:%S') ) . '",
 insertdate_desc:"' . mce_escape( __('Insert date') ) . '",
 inserttime_desc:"' . mce_escape( __('Insert time') ) . '",
 months_long:"' . mce_escape( __('January').','.__('February').','.__('March').','.__('April').','.__('May').','.__('June').','.__('July').','.__('August').','.__('September').','.__('October').','.__('November').','.__('December') ) . '",
@@ -175,7 +175,7 @@ no_sug:"' . mce_escape( __('No suggestions') ) . '",
 no_mpell:"' . mce_escape( __('No misspellings found.') ) . '"
 },
 pagebreak:{
-desc:"' . mce_escape( __('Insert page break.') ) . '"
+desc:"' . mce_escape( __('Insert Page Break') ) . '"
 }}});
 
 tinyMCE.addI18n("' . $language . '.advanced",{
@@ -202,10 +202,10 @@ bold_desc:"' . mce_escape( __('Bold') ) . ' (Ctrl / Alt+Shift + B)",
 italic_desc:"' . mce_escape( __('Italic') ) . ' (Ctrl / Alt+Shift + I)",
 underline_desc:"' . mce_escape( __('Underline') ) . '",
 striketrough_desc:"' . mce_escape( __('Strikethrough') ) . ' (Alt+Shift+D)",
-justifyleft_desc:"' . mce_escape( __('Align left') ) . ' (Alt+Shift+L)",
-justifycenter_desc:"' . mce_escape( __('Align center') ) . ' (Alt+Shift+C)",
-justifyright_desc:"' . mce_escape( __('Align right') ) . ' (Alt+Shift+R)",
-justifyfull_desc:"' . mce_escape( __('Align full') ) . ' (Alt+Shift+J)",
+justifyleft_desc:"' . mce_escape( __('Align Left') ) . ' (Alt+Shift+L)",
+justifycenter_desc:"' . mce_escape( __('Align Center') ) . ' (Alt+Shift+C)",
+justifyright_desc:"' . mce_escape( __('Align Right') ) . ' (Alt+Shift+R)",
+justifyfull_desc:"' . mce_escape( __('Align Full') ) . ' (Alt+Shift+J)",
 bullist_desc:"' . mce_escape( __('Unordered list') ) . ' (Alt+Shift+U)",
 numlist_desc:"' . mce_escape( __('Ordered list') ) . ' (Alt+Shift+O)",
 outdent_desc:"' . mce_escape( __('Outdent') ) . '",
@@ -336,7 +336,7 @@ correction:"' . mce_escape( __('No correction') ) . '",
 enablejavascript:"' . mce_escape( __('Enable JavaScript') ) . '",
 starttime:"' . mce_escape( __('Start time') ) . '",
 endtime:"' . mce_escape( __('End time') ) . '",
-href:"' . mce_escape( __('Href') ) . '",
+href:"' . mce_escape( __('href') ) . '",
 qtsrcchokespeed:"' . mce_escape( __('Choke speed') ) . '",
 target:"' . mce_escape( __('Target') ) . '",
 volume:"' . mce_escape( __('Volume') ) . '",
@@ -404,7 +404,7 @@ flv_jscallback:"' . mce_escape( __('JS Callback') ) . '"
 
 tinyMCE.addI18n("' . $language . '.wordpress",{
 wp_adv_desc:"' . mce_escape( __('Show/Hide Kitchen Sink') )  . ' (Alt+Shift+Z)",
-wp_more_desc:"' . mce_escape( __('Insert More tag') ) . ' (Alt+Shift+T)",
+wp_more_desc:"' . mce_escape( __('Insert More Tag') ) . ' (Alt+Shift+T)",
 wp_page_desc:"' . mce_escape( __('Insert Page break') ) . ' (Alt+Shift+P)",
 wp_help_desc:"' . mce_escape( __('Help') ) . ' (Alt+Shift+H)",
 wp_more_alt:"' . mce_escape( __('More...') ) . '",
diff --git a/wp-includes/js/tinymce/wp-mce-help.php b/wp-includes/js/tinymce/wp-mce-help.php
index a946f9af1b..a65b527a96 100644
--- a/wp-includes/js/tinymce/wp-mce-help.php
+++ b/wp-includes/js/tinymce/wp-mce-help.php
@@ -210,10 +210,10 @@ wp_admin_css( 'wp-admin', true );
 		<script type="text/javascript">
 		if ( ! tinymce.isWebKit )
 			document.write("<tr><th>b</th><td><?php _e('Bold') ?></td><th>i</th><td><?php _e('Italic') ?></td></tr>"+
-			"<tr><th>u</th><td><?php _e('Underline') ?></td><th>1</th><td><?php _e('Header 1') ?></td></tr>"+
-			"<tr><th>2</th><td><?php _e('Header 2') ?></td><th>3</th><td><?php _e('Header 3') ?></td></tr>"+
-			"<tr><th>4</th><td><?php _e('Header 4') ?></td><th>5</th><td><?php _e('Header 5') ?></td></tr>"+
-			"<tr><th>6</th><td><?php _e('Header 6') ?></td><th>9</th><td><?php _e('Address') ?></td></tr>")
+			"<tr><th>u</th><td><?php _e('Underline') ?></td><th>1</th><td><?php _e('Heading 1') ?></td></tr>"+
+			"<tr><th>2</th><td><?php _e('Heading 2') ?></td><th>3</th><td><?php _e('Heading 3') ?></td></tr>"+
+			"<tr><th>4</th><td><?php _e('Heading 4') ?></td><th>5</th><td><?php _e('Heading 5') ?></td></tr>"+
+			"<tr><th>6</th><td><?php _e('Heading 6') ?></td><th>9</th><td><?php _e('Address') ?></td></tr>")
 		</script>
 	</table>
 
diff --git a/wp-includes/link-template.php b/wp-includes/link-template.php
index 923a9728e4..7e094851de 100644
--- a/wp-includes/link-template.php
+++ b/wp-includes/link-template.php
@@ -607,7 +607,7 @@ function edit_tag_link( $link = '', $before = '', $after = '', $tag = null ) {
 	if ( empty($link) )
 		$link = __('Edit This');
 
-	$link = '<a href="' . get_edit_tag_link( $tag->term_id ) . '" title="' . __( 'Edit tag' ) . '">' . $link . '</a>';
+	$link = '<a href="' . get_edit_tag_link( $tag->term_id ) . '" title="' . __( 'Edit Tag' ) . '">' . $link . '</a>';
 	echo $before . apply_filters( 'edit_tag_link', $link, $tag->term_id ) . $after;
 }
 
@@ -712,7 +712,7 @@ function edit_post_link( $link = null, $before = '', $after = '', $id = 0 ) {
 	if ( null === $link )
 		$link = __('Edit This');
 
-	$link = '<a class="post-edit-link" href="' . $url . '" title="' . esc_attr( __( 'Edit post' ) ) . '">' . $link . '</a>';
+	$link = '<a class="post-edit-link" href="' . $url . '" title="' . esc_attr( __( 'Edit Post' ) ) . '">' . $link . '</a>';
 	echo $before . apply_filters( 'edit_post_link', $link, $post->ID ) . $after;
 }
 
@@ -841,7 +841,7 @@ function edit_bookmark_link( $link = '', $before = '', $after = '', $bookmark =
 	if ( empty($link) )
 		$link = __('Edit This');
 
-	$link = '<a href="' . get_edit_bookmark_link( $link ) . '" title="' . __( 'Edit link' ) . '">' . $link . '</a>';
+	$link = '<a href="' . get_edit_bookmark_link( $link ) . '" title="' . __( 'Edit Link' ) . '">' . $link . '</a>';
 	echo $before . apply_filters( 'edit_bookmark_link', $link, $bookmark->link_id ) . $after;
 }
 
diff --git a/wp-includes/locale.php b/wp-includes/locale.php
index 7f5392c1bc..2be540113d 100644
--- a/wp-includes/locale.php
+++ b/wp-includes/locale.php
@@ -105,65 +105,65 @@ class WP_Locale {
 	 */
 	function init() {
 		// The Weekdays
-		$this->weekday[0] = __('Sunday');
-		$this->weekday[1] = __('Monday');
-		$this->weekday[2] = __('Tuesday');
-		$this->weekday[3] = __('Wednesday');
-		$this->weekday[4] = __('Thursday');
-		$this->weekday[5] = __('Friday');
-		$this->weekday[6] = __('Saturday');
+		$this->weekday[0] = /* translators: weekday */ __('Sunday');
+		$this->weekday[1] = /* translators: weekday */ __('Monday');
+		$this->weekday[2] = /* translators: weekday */ __('Tuesday');
+		$this->weekday[3] = /* translators: weekday */ __('Wednesday');
+		$this->weekday[4] = /* translators: weekday */ __('Thursday');
+		$this->weekday[5] = /* translators: weekday */ __('Friday');
+		$this->weekday[6] = /* translators: weekday */ __('Saturday');
 
 		// The first letter of each day.  The _%day%_initial suffix is a hack to make
 		// sure the day initials are unique.
-		$this->weekday_initial[__('Sunday')]    = __('S_Sunday_initial');
-		$this->weekday_initial[__('Monday')]    = __('M_Monday_initial');
-		$this->weekday_initial[__('Tuesday')]   = __('T_Tuesday_initial');
-		$this->weekday_initial[__('Wednesday')] = __('W_Wednesday_initial');
-		$this->weekday_initial[__('Thursday')]  = __('T_Thursday_initial');
-		$this->weekday_initial[__('Friday')]    = __('F_Friday_initial');
-		$this->weekday_initial[__('Saturday')]  = __('S_Saturday_initial');
+		$this->weekday_initial[__('Sunday')]    = /* translators: one-letter abbreviation of the weekday */ __('S_Sunday_initial');
+		$this->weekday_initial[__('Monday')]    = /* translators: one-letter abbreviation of the weekday */ __('M_Monday_initial');
+		$this->weekday_initial[__('Tuesday')]   = /* translators: one-letter abbreviation of the weekday */ __('T_Tuesday_initial');
+		$this->weekday_initial[__('Wednesday')] = /* translators: one-letter abbreviation of the weekday */ __('W_Wednesday_initial');
+		$this->weekday_initial[__('Thursday')]  = /* translators: one-letter abbreviation of the weekday */ __('T_Thursday_initial');
+		$this->weekday_initial[__('Friday')]    = /* translators: one-letter abbreviation of the weekday */ __('F_Friday_initial');
+		$this->weekday_initial[__('Saturday')]  = /* translators: one-letter abbreviation of the weekday */ __('S_Saturday_initial');
 
 		foreach ($this->weekday_initial as $weekday_ => $weekday_initial_) {
 			$this->weekday_initial[$weekday_] = preg_replace('/_.+_initial$/', '', $weekday_initial_);
 		}
 
-		// Abbreviations for each day.
-		$this->weekday_abbrev[__('Sunday')]    = __('Sun');
-		$this->weekday_abbrev[__('Monday')]    = __('Mon');
-		$this->weekday_abbrev[__('Tuesday')]   = __('Tue');
-		$this->weekday_abbrev[__('Wednesday')] = __('Wed');
-		$this->weekday_abbrev[__('Thursday')]  = __('Thu');
-		$this->weekday_abbrev[__('Friday')]    = __('Fri');
-		$this->weekday_abbrev[__('Saturday')]  = __('Sat');
+		// Abbreviations for each day.		
+		$this->weekday_abbrev[__('Sunday')]    = /* translators: three-letter abbreviation of the weekday */ __('Sun');
+		$this->weekday_abbrev[__('Monday')]    = /* translators: three-letter abbreviation of the weekday */ __('Mon');
+		$this->weekday_abbrev[__('Tuesday')]   = /* translators: three-letter abbreviation of the weekday */ __('Tue');
+		$this->weekday_abbrev[__('Wednesday')] = /* translators: three-letter abbreviation of the weekday */ __('Wed');
+		$this->weekday_abbrev[__('Thursday')]  = /* translators: three-letter abbreviation of the weekday */ __('Thu');
+		$this->weekday_abbrev[__('Friday')]    = /* translators: three-letter abbreviation of the weekday */ __('Fri');
+		$this->weekday_abbrev[__('Saturday')]  = /* translators: three-letter abbreviation of the weekday */ __('Sat');
 
 		// The Months
-		$this->month['01'] = __('January');
-		$this->month['02'] = __('February');
-		$this->month['03'] = __('March');
-		$this->month['04'] = __('April');
-		$this->month['05'] = __('May');
-		$this->month['06'] = __('June');
-		$this->month['07'] = __('July');
-		$this->month['08'] = __('August');
-		$this->month['09'] = __('September');
-		$this->month['10'] = __('October');
-		$this->month['11'] = __('November');
-		$this->month['12'] = __('December');
+		$this->month['01'] = /* translators: month name */ __('January');
+		$this->month['02'] = /* translators: month name */ __('February');
+		$this->month['03'] = /* translators: month name */ __('March');
+		$this->month['04'] = /* translators: month name */ __('April');
+		$this->month['05'] = /* translators: month name */ __('May');
+		$this->month['06'] = /* translators: month name */ __('June');
+		$this->month['07'] = /* translators: month name */ __('July');
+		$this->month['08'] = /* translators: month name */ __('August');
+		$this->month['09'] = /* translators: month name */ __('September');
+		$this->month['10'] = /* translators: month name */ __('October');
+		$this->month['11'] = /* translators: month name */ __('November');
+		$this->month['12'] = /* translators: month name */ __('December');
 
 		// Abbreviations for each month. Uses the same hack as above to get around the
 		// 'May' duplication.
-		$this->month_abbrev[__('January')] = __('Jan_January_abbreviation');
-		$this->month_abbrev[__('February')] = __('Feb_February_abbreviation');
-		$this->month_abbrev[__('March')] = __('Mar_March_abbreviation');
-		$this->month_abbrev[__('April')] = __('Apr_April_abbreviation');
-		$this->month_abbrev[__('May')] = __('May_May_abbreviation');
-		$this->month_abbrev[__('June')] = __('Jun_June_abbreviation');
-		$this->month_abbrev[__('July')] = __('Jul_July_abbreviation');
-		$this->month_abbrev[__('August')] = __('Aug_August_abbreviation');
-		$this->month_abbrev[__('September')] = __('Sep_September_abbreviation');
-		$this->month_abbrev[__('October')] = __('Oct_October_abbreviation');
-		$this->month_abbrev[__('November')] = __('Nov_November_abbreviation');
-		$this->month_abbrev[__('December')] = __('Dec_December_abbreviation');
+		$this->month_abbrev[__('January')] = /* translators: three-letter abbreviation of the month */ __('Jan_January_abbreviation');
+		$this->month_abbrev[__('February')] = /* translators: three-letter abbreviation of the month */ __('Feb_February_abbreviation');
+		$this->month_abbrev[__('March')] = /* translators: three-letter abbreviation of the month */ __('Mar_March_abbreviation');
+		$this->month_abbrev[__('April')] = /* translators: three-letter abbreviation of the month */ __('Apr_April_abbreviation');
+		$this->month_abbrev[__('May')] = /* translators: three-letter abbreviation of the month */ __('May_May_abbreviation');
+		$this->month_abbrev[__('June')] = /* translators: three-letter abbreviation of the month */ __('Jun_June_abbreviation');
+		$this->month_abbrev[__('July')] = /* translators: three-letter abbreviation of the month */ __('Jul_July_abbreviation');
+		$this->month_abbrev[__('August')] = /* translators: three-letter abbreviation of the month */ __('Aug_August_abbreviation');
+		$this->month_abbrev[__('September')] = /* translators: three-letter abbreviation of the month */ __('Sep_September_abbreviation');
+		$this->month_abbrev[__('October')] = /* translators: three-letter abbreviation of the month */ __('Oct_October_abbreviation');
+		$this->month_abbrev[__('November')] = /* translators: three-letter abbreviation of the month */ __('Nov_November_abbreviation');
+		$this->month_abbrev[__('December')] = /* translators: three-letter abbreviation of the month */ __('Dec_December_abbreviation');
 
 		foreach ($this->month_abbrev as $month_ => $month_abbrev_) {
 			$this->month_abbrev[$month_] = preg_replace('/_.+_abbreviation$/', '', $month_abbrev_);