diff --git a/src/fr/neatmonster/nocheatplus/checks/chat/ChatConfig.java b/src/fr/neatmonster/nocheatplus/checks/chat/ChatConfig.java
index 3669cd7e..a7b98915 100644
--- a/src/fr/neatmonster/nocheatplus/checks/chat/ChatConfig.java
+++ b/src/fr/neatmonster/nocheatplus/checks/chat/ChatConfig.java
@@ -71,6 +71,8 @@ public class ChatConfig implements CheckConfig {
     public final ActionList   colorActions;
     
     public final boolean      globalChatCheck;
+	public final boolean      globalChatGlobalCheck;
+	public final boolean      globalChatPlayerCheck;
 	public final EnginePlayerConfig globalChatEnginePlayerConfig;
 	public final float        globalChatFrequencyFactor;
 	public final float        globalChatFrequencyWeight;
@@ -149,6 +151,8 @@ public class ChatConfig implements CheckConfig {
         colorActions = config.getActionList(ConfPaths.CHAT_COLOR_ACTIONS, Permissions.CHAT_COLOR);
         
         globalChatCheck = config.getBoolean(ConfPaths.CHAT_GLOBALCHAT_CHECK);
+    	globalChatGlobalCheck = config.getBoolean(ConfPaths.CHAT_GLOBALCHAT_GL_CHECK, true);
+    	globalChatPlayerCheck = config.getBoolean(ConfPaths.CHAT_GLOBALCHAT_PP_CHECK, true);
         globalChatEnginePlayerConfig = new EnginePlayerConfig(config);
         globalChatFrequencyFactor = (float) config.getDouble(ConfPaths.CHAT_GLOBALCHAT_FREQUENCY_FACTOR);
         globalChatFrequencyWeight = (float) config.getDouble(ConfPaths.CHAT_GLOBALCHAT_FREQUENCY_WEIGHT);
diff --git a/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/LetterEngine.java b/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/LetterEngine.java
index fec2d64e..3a99949f 100644
--- a/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/LetterEngine.java
+++ b/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/LetterEngine.java
@@ -63,29 +63,34 @@ public class LetterEngine {
 		final Map<String, Float> result = new HashMap<String, Float>();
 		
 		// Global processors.
-		for (final WordProcessor processor : processors){
-			try{
-				result.put(processor.getProcessorName(), processor.process(letterCount) * cc.globalChatGlobalWeight);
-			}
-			catch( final Exception e){
-				Bukkit.getLogger().warning("[NoCheatPlus] globalchat: processor("+processor.getProcessorName()+") generated an exception: " + e.getClass().getSimpleName() + ": " + e.getMessage());
-				e.printStackTrace();
-				continue;
+		if (cc.globalChatGlobalCheck){
+			for (final WordProcessor processor : processors){
+				try{
+					result.put(processor.getProcessorName(), processor.process(letterCount) * cc.globalChatGlobalWeight);
+				}
+				catch( final Exception e){
+					Bukkit.getLogger().warning("[NoCheatPlus] globalchat: processor("+processor.getProcessorName()+") generated an exception: " + e.getClass().getSimpleName() + ": " + e.getMessage());
+					e.printStackTrace();
+					continue;
+				}
 			}
 		}
 		
 		// Per player processors.
-		final EnginePlayerData engineData = dataMap.get(playerName, cc); 
-		for (final WordProcessor processor : engineData.processors){
-			try{
-				result.put(processor.getProcessorName(), processor.process(letterCount) * cc.globalChatPlayerWeight);
-			}
-			catch( final Exception e){
-				Bukkit.getLogger().warning("[NoCheatPlus] globalchat: processor("+processor.getProcessorName()+") generated an exception: " + e.getClass().getSimpleName() + ": " + e.getMessage());
-				e.printStackTrace();
-				continue;
+		if (cc.globalChatPlayerCheck){
+			final EnginePlayerData engineData = dataMap.get(playerName, cc); 
+			for (final WordProcessor processor : engineData.processors){
+				try{
+					result.put(processor.getProcessorName(), processor.process(letterCount) * cc.globalChatPlayerWeight);
+				}
+				catch( final Exception e){
+					Bukkit.getLogger().warning("[NoCheatPlus] globalchat: processor("+processor.getProcessorName()+") generated an exception: " + e.getClass().getSimpleName() + ": " + e.getMessage());
+					e.printStackTrace();
+					continue;
+				}
 			}
 		}
+		
 		return result;
 	}
 
diff --git a/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/processors/DigestedWords.java b/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/processors/DigestedWords.java
index 8cab7c77..dd4ef4f6 100644
--- a/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/processors/DigestedWords.java
+++ b/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/processors/DigestedWords.java
@@ -125,6 +125,7 @@ public abstract class DigestedWords extends AbstractWordProcessor{
 		letters.clear();
 		digits.clear();
 		other.clear();
+		super.clear(); // Just for completeness.
 	}
 	
 	public static final char[] toArray(final Collection<Character> chars){
diff --git a/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/processors/SimilarWordsBKL.java b/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/processors/SimilarWordsBKL.java
index aa66714d..0a91216e 100644
--- a/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/processors/SimilarWordsBKL.java
+++ b/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/processors/SimilarWordsBKL.java
@@ -56,6 +56,7 @@ public class SimilarWordsBKL extends DigestedWords {
 	public void clear() {
 		super.clear();
 		tree.clear();
+		added = 0;
 	}
 
 	@Override
diff --git a/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/processors/WordPrefixes.java b/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/processors/WordPrefixes.java
index 392dcf9b..6529b963 100644
--- a/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/processors/WordPrefixes.java
+++ b/src/fr/neatmonster/nocheatplus/checks/chat/analysis/engine/processors/WordPrefixes.java
@@ -58,6 +58,7 @@ public class WordPrefixes extends DigestedWords{
 	public void clear() {
 		super.clear();
 		tree.clear();
+		added = 0;
 	}
 
 	protected float getScore(final List<Character> chars, final long ts) {
diff --git a/src/fr/neatmonster/nocheatplus/config/ConfPaths.java b/src/fr/neatmonster/nocheatplus/config/ConfPaths.java
index a7ef84e5..3b78f905 100644
--- a/src/fr/neatmonster/nocheatplus/config/ConfPaths.java
+++ b/src/fr/neatmonster/nocheatplus/config/ConfPaths.java
@@ -153,6 +153,7 @@ public abstract class ConfPaths {
 	// (Some of the following paths must be public for generic config reading.)
     // Extended global checks.
     private static final String CHAT_GLOBALCHAT_GL                       = CHAT_GLOBALCHAT + "global.";
+	public static final String CHAT_GLOBALCHAT_GL_CHECK                  = CHAT_GLOBALCHAT_GL + "active";
 	public static final String CHAT_GLOBALCHAT_GL_WEIGHT                 = CHAT_GLOBALCHAT_GL + "weight";
     public static final String CHAT_GLOBALCHAT_GL_WORDS                  = CHAT_GLOBALCHAT_GL + "words.";
 	public static final String CHAT_GLOBALCHAT_GL_WORDS_CHECK            = CHAT_GLOBALCHAT_GL_WORDS + "active";
@@ -162,6 +163,7 @@ public abstract class ConfPaths {
 	public static final String CHAT_GLOBALCHAT_GL_SIMILARITY_CHECK       = CHAT_GLOBALCHAT_GL_SIMILARITY + "active";
 	// Extended per player checks.
 	private static final String CHAT_GLOBALCHAT_PP                       = CHAT_GLOBALCHAT + "player.";
+	public static final String CHAT_GLOBALCHAT_PP_CHECK                  = CHAT_GLOBALCHAT_PP + "active";
 	public static final String CHAT_GLOBALCHAT_PP_WEIGHT                 = CHAT_GLOBALCHAT_PP + "weight";
 	public static final String CHAT_GLOBALCHAT_PP_PREFIXES               = CHAT_GLOBALCHAT_PP + "prefixes.";
 	public static final String CHAT_GLOBALCHAT_PP_PREFIXES_CHECK         = CHAT_GLOBALCHAT_PP_PREFIXES + "active";