rem: prompter.checkForUpdates(window); 
add: prompter.checkForUpdates(); 
context: function checkForUpdates(){  var prompter = Components.classes["@mozilla.org/updates/update-prompt;1"]                           .createInstance(Components.interfaces.nsIUpdatePrompt);  prompter.checkForUpdates(window);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/a938271a6773900da90a8d7fbde143fb6b8bdd76/utilityOverlay.js/buggy/browser/base/content/utilityOverlay.js