If I go in using safe mode the menus work fine. If I don't the time it takes to get the sub-menu is several minutes. I've tried "disabling the add-ons" and "resetting the controls" but that doesn't affect it. It is still slow if I'm out of safe mode. I've also tried uninstalling and reinstalling it. And I've tried deleting the "Program Files" directory it occupies in-between uninstalls and installs, too. I've also tried getting rid of Firefox and the Mozilla Maintenance Service at the same time, too, just in case. Nothing works. I get the following error if I look at "the console": mutating the [[Prototype]] of an object will cause your code to run very slowly; instead create the object with the correct initial [[Prototype]] value using Object.create resource://gre/components/steelApplication.js Line 783 And I've tried looking at all the other forum posts complaining about this "mutating the prototype of an object" error. Any suggestions would be appreciated.