add:  EditorCleanup();  
context: function ComposeUnload(){  dump("\nComposeUnload from XUL\n");  RemoveMessageComposeOfflineObserver();  RemoveDirectoryServerObserver(null);  if (gCurrentIdentity)    RemoveDirectoryServerObserver("mail.identity." + gCurrentIdentity.key);  if (gCurrentAutocompleteDirectory)    RemoveDirectorySettingsObserver(gCurrentAutocompleteDirectory);  if (gMsgCompose)    gMsgCompose.UnregisterStateListener(stateListener);}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/f5190f99e42708279ad8276f70af4767edbaeb57/MsgComposeCommands.js/clean/mailnews/compose/resources/content/MsgComposeCommands.js