diff --git a/wp-admin/includes/theme.php b/wp-admin/includes/theme.php
index 1f4fbefad9..67f2e6f904 100644
--- a/wp-admin/includes/theme.php
+++ b/wp-admin/includes/theme.php
@@ -116,6 +116,45 @@ function get_broken_themes() {
 	return $wp_broken_themes;
 }
 
+/**
+ * Get the allowed themes for the current blog.
+ *
+ * @since 3.0
+ *
+ * @uses get_themes()
+ * @uses current_theme_info()
+ * @uses get_site_allowed_themes()
+ * @uses wpmu_get_blog_allowedthemes
+ *
+ * @return array $themes Array of allowed themes.
+ */
+function get_allowed_themes() {
+	if ( !is_multisite() )
+		return get_themes();
+
+	$themes = get_themes();
+	$ct = current_theme_info();
+	$allowed_themes = apply_filters("allowed_themes", get_site_allowed_themes() );
+	if ( $allowed_themes == false )
+		$allowed_themes = array();
+
+	$blog_allowed_themes = wpmu_get_blog_allowedthemes();
+	if ( is_array( $blog_allowed_themes ) )
+		$allowed_themes = array_merge( $allowed_themes, $blog_allowed_themes );
+
+	if ( isset( $allowed_themes[ wp_specialchars( $ct->stylesheet ) ] ) == false )
+		$allowed_themes[ wp_specialchars( $ct->stylesheet ) ] = true;
+
+	reset( $themes );
+	foreach ( $themes as $key => $theme ) {
+		if ( isset( $allowed_themes[ wp_specialchars( $theme[ 'Stylesheet' ] ) ] ) == false )
+			unset( $themes[ $key ] );
+	}
+	reset( $themes );
+	
+	return $themes;
+}
+
 /**
  * Get the Page Templates available in this theme
  *
diff --git a/wp-admin/includes/user.php b/wp-admin/includes/user.php
index a70b0bb814..448efee657 100644
--- a/wp-admin/includes/user.php
+++ b/wp-admin/includes/user.php
@@ -197,11 +197,11 @@ function edit_user( $user_id = 0 ) {
  */
 function get_author_user_ids() {
 	global $wpdb;
-	if( !is_multisite() ) {
+	if ( !is_multisite() )
 		$level_key = $wpdb->get_blog_prefix() . 'user_level';
-	} else {
+	else
 		$level_key = $wpdb->get_blog_prefix() . 'capabilities'; // wpmu site admins don't have user_levels
-	}
+
 	return $wpdb->get_col( $wpdb->prepare("SELECT user_id FROM $wpdb->usermeta WHERE meta_key = %s AND meta_value != '0'", $level_key) );
 }
 
@@ -220,7 +220,7 @@ function get_editable_authors( $user_id ) {
 
 	$editable = get_editable_user_ids( $user_id );
 
-	if( !$editable ) {
+	if ( !$editable ) {
 		return false;
 	} else {
 		$editable = join(',', $editable);
@@ -252,11 +252,11 @@ function get_editable_user_ids( $user_id, $exclude_zeros = true, $post_type = 'p
 		else
 			return array();
 	}
-	if( !is_multisite() ) {
+
+	if ( !is_multisite() )
 		$level_key = $wpdb->get_blog_prefix() . 'user_level';
-	} else {
+	else
 		$level_key = $wpdb->get_blog_prefix() . 'capabilities'; // wpmu site admins don't have user_levels
-	}
 
 	$query = $wpdb->prepare("SELECT user_id FROM $wpdb->usermeta WHERE meta_key = %s", $level_key);
 	if ( $exclude_zeros )
@@ -302,11 +302,10 @@ function get_editable_roles() {
 function get_nonauthor_user_ids() {
 	global $wpdb;
 
-	if ( !is_multisite() ) {
+	if ( !is_multisite() )
 		$level_key = $wpdb->get_blog_prefix() . 'user_level';
-	} else {
+	else
 		$level_key = $wpdb->get_blog_prefix() . 'capabilities'; // wpmu site admins don't have user_levels
-	}
 
 	return $wpdb->get_col( $wpdb->prepare("SELECT user_id FROM $wpdb->usermeta WHERE meta_key = %s AND meta_value = '0'", $level_key) );
 }
@@ -332,7 +331,7 @@ function get_others_unpublished_posts($user_id, $type='any') {
 
 	$dir = ( 'pending' == $type ) ? 'ASC' : 'DESC';
 
-	if( !$editable ) {
+	if ( !$editable ) {
 		$other_unpubs = '';
 	} else {
 		$editable = join(',', $editable);
@@ -675,11 +674,11 @@ class WP_User_Search {
 		}
 
 		$this->query_from_where = "FROM $wpdb->users";
-		if ( $this->role )
+		if ( $this->role ) {
 			$this->query_from_where .= $wpdb->prepare(" INNER JOIN $wpdb->usermeta ON $wpdb->users.ID = $wpdb->usermeta.user_id WHERE $wpdb->usermeta.meta_key = '{$wpdb->prefix}capabilities' AND $wpdb->usermeta.meta_value LIKE %s", '%' . $this->role . '%');
-		elseif ( !is_multisite() )
+		} elseif ( !is_multisite() ) {
 			$this->query_from_where .= " WHERE 1=1";
-		else {
+		} else {
 			$level_key = $wpdb->get_blog_prefix() . 'capabilities'; // wpmu site admins don't have user_levels
 			$this->query_from_where .= ", $wpdb->usermeta WHERE $wpdb->users.ID = $wpdb->usermeta.user_id AND meta_key = '{$level_key}'";
 		}
diff --git a/wp-admin/themes.php b/wp-admin/themes.php
index bdb50c7f7c..8aba22d646 100644
--- a/wp-admin/themes.php
+++ b/wp-admin/themes.php
@@ -12,30 +12,6 @@ require_once('admin.php');
 if ( !current_user_can('switch_themes') )
 	wp_die( __( 'Cheatin’ uh?' ) );
 
-if ( is_multisite() ) {
-	$themes = get_themes();
-	$ct = current_theme_info();
-	$allowed_themes = apply_filters("allowed_themes", get_site_allowed_themes() );
-	if ( $allowed_themes == false )
-		$allowed_themes = array();
-
-	$blog_allowed_themes = wpmu_get_blog_allowedthemes();
-	if ( is_array( $blog_allowed_themes ) )
-		$allowed_themes = array_merge( $allowed_themes, $blog_allowed_themes );
-	if ( $blog_id != 1 )
-		unset( $allowed_themes[ "h3" ] );
-
-	if ( isset( $allowed_themes[ wp_specialchars( $ct->stylesheet ) ] ) == false )
-		$allowed_themes[ wp_specialchars( $ct->stylesheet ) ] = true;
-
-	reset( $themes );
-	foreach ( $themes as $key => $theme ) {
-		if ( isset( $allowed_themes[ wp_specialchars( $theme[ 'Stylesheet' ] ) ] ) == false ) {
-			unset( $themes[ $key ] );
-		}
-	}
-	reset( $themes );
-}
 if ( isset($_GET['action']) ) {
 	if ( 'activate' == $_GET['action'] ) {
 		check_admin_referer('switch-theme_' . $_GET['template']);
@@ -85,8 +61,7 @@ if ( is_multisite() && current_user_can('edit_themes') ) {
 <?php endif; ?>
 
 <?php
-if ( !is_multisite() )
-	$themes = get_themes();
+$themes = get_allowed_themes();
 $ct = current_theme_info();
 unset($themes[$ct->name]);
 
diff --git a/wp-includes/load.php b/wp-includes/load.php
index 2db9e2c6e9..4b4ae6ceb5 100644
--- a/wp-includes/load.php
+++ b/wp-includes/load.php
@@ -260,20 +260,17 @@ function wp_start_object_cache() {
 	}
 
 	wp_cache_init();
+
 	if ( function_exists('wp_cache_add_global_groups') ) {
-			if( is_multisite() ) {
-					wp_cache_add_global_groups(array ('users', 'userlogins', 'usermeta', 'site-transient', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss'));
-			} else {
-				wp_cache_add_global_groups(array ('users', 'userlogins', 'usermeta', 'site-transient'));
-			}
+		wp_cache_add_global_groups(array ('users', 'userlogins', 'usermeta', 'site-transient', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss'));
 		wp_cache_add_non_persistent_groups(array( 'comment', 'counts', 'plugins' ));
 	}
 }
 
 function wp_not_installed() {
 	if ( is_multisite() ) {
-			if ( !is_blog_installed() && !defined('WP_INSTALLING') )
-					die( __( 'The blog you have requested is not installed properly. Please contact the system administrator.' ) ); // have to die here ~ Mark
+		if ( !is_blog_installed() && !defined('WP_INSTALLING') )
+			die( __( 'The blog you have requested is not installed properly. Please contact the system administrator.' ) ); // have to die here
 	} elseif ( !is_blog_installed() && (strpos($_SERVER['PHP_SELF'], 'install.php') === false && !defined('WP_INSTALLING')) ) {
 		if ( defined('WP_SITEURL') )
 			$link = WP_SITEURL . '/wp-admin/install.php';
@@ -293,13 +290,13 @@ function wp_load_mu_plugins() {
 	if ( is_dir( WPMU_PLUGIN_DIR ) ) {
 		if ( $dh = opendir( WPMU_PLUGIN_DIR ) ) {
 			$mu_plugins = array ();
-			while ( ( $plugin = readdir( $dh ) ) !== false )
+			while ( ( $plugin = readdir( $dh ) ) !== false ) {
 				if ( substr( $plugin, -4 ) == '.php' )
 					$mu_plugins[] = $plugin;
+			}
 			closedir( $dh );
-					if( is_multisite() )
-					sort( $mu_plugins );
-			foreach( $mu_plugins as $mu_plugin )
+			sort( $mu_plugins );
+			foreach ( $mu_plugins as $mu_plugin )
 				include_once( WPMU_PLUGIN_DIR . '/' . $mu_plugin );
 		}
 	}