fix 286365

diff --git a/org.eclipse.babel.editor/src/org/eclipse/babel/editor/MessagesEditorMarkers.java b/org.eclipse.babel.editor/src/org/eclipse/babel/editor/MessagesEditorMarkers.java
index 30e1b6f..ecbe44d 100644
--- a/org.eclipse.babel.editor/src/org/eclipse/babel/editor/MessagesEditorMarkers.java
+++ b/org.eclipse.babel.editor/src/org/eclipse/babel/editor/MessagesEditorMarkers.java

@@ -110,7 +110,6 @@
         
         //System.out.println("CREATE EDITOR MARKER");
         setChanged();
-        notifyObservers(this);
     }
     
     public void clear() {

diff --git a/org.eclipse.babel.editor/src/org/eclipse/babel/editor/resource/validator/MessagesBundleGroupValidator.java b/org.eclipse.babel.editor/src/org/eclipse/babel/editor/resource/validator/MessagesBundleGroupValidator.java
index 6eeac6c..0fbf2d1 100644
--- a/org.eclipse.babel.editor/src/org/eclipse/babel/editor/resource/validator/MessagesBundleGroupValidator.java
+++ b/org.eclipse.babel.editor/src/org/eclipse/babel/editor/resource/validator/MessagesBundleGroupValidator.java

@@ -15,6 +15,7 @@
 import org.eclipse.babel.core.message.MessagesBundleGroup;
 import org.eclipse.babel.core.message.checks.DuplicateValueCheck;
 import org.eclipse.babel.core.message.checks.MissingValueCheck;
+import org.eclipse.babel.editor.MessagesEditorMarkers;
 import org.eclipse.babel.editor.preferences.MsgEditorPreferences;
 
 
@@ -73,6 +74,21 @@
             	}
             }
         }
+    	
+		/*
+		 * KLUDGE to fix 286365: The notification system could do with some clean-up.
+		 * 
+		 * The MessagesEditorMarkers is an observable object. If it
+		 * finds anything that indicates that markers are required (e.g. if
+		 * multiple keys have the same text) then it marks itself as 'changed'.
+		 * It does not notify the observers because that would not be very
+		 * efficient. We must therefore notify the observers here (noting that
+		 * notifyObservers will in fact do nothing if none of the above calls to
+		 * markFailed in fact set the observable as having changed).
+		 */
+    	if (markerStrategy instanceof MessagesEditorMarkers) {
+    		((MessagesEditorMarkers)markerStrategy).notifyObservers(null);
+    	}
     }
     
 }