add: accountManager.removeIncomingServerListener(gThreePaneIncomingServerListener); 
context: function OnUnloadMessenger(){  OnMailWindowUnload();}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/d6b386e62aacde5f60d7a5daec7ecef70abf4081/msgMail3PaneWindow.js/buggy/mailnews/base/resources/content/msgMail3PaneWindow.js