add: RemoveDirectoryServerObserver(null); RemoveDirectoryServerObserver("mail.identity." + currentIdentity.key); 
context: function ComposeUnload(){	dump("\nComposeUnload from XUL\n");	RemoveMessageComposeOfflineObserver();	msgCompose.UnregisterStateListener(stateListener);}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/65b7b1bd5c283ee3988a94203fb1163b712a6bb8/MsgComposeCommands.js/buggy/mailnews/compose/resources/content/MsgComposeCommands.js