http://arewee10syet.com/ http://arewee10syet.com/ has a list of addons and their compatibility. I tried turning on the about:config option and the URL bar brok

http://arewee10syet.com/ http://arewee10syet.com/ has a list of addons and their compatibility. I tried turning on the about:config option and the URL bar broke, so obviously something I have is incompatible - I suspect it's Classic Theme Restorer, although that site does list it as compatible.