Comment 121 for bug 401823

I also get this warning but my situation is worse as Firefox freezes any time I click on a menu item, Bookmarks Toolbar item or right-click on a text box. Since this bug does not mention freezing, only annoying error output, I started a new one, Bug #574617 for my type of situation. As detailed in that bug report, reinstalling Firefox, xulrunner and removing flash-plugin, as well as running in firefox --safe-mode does not help.