Somebody in the thread at some point said: > morning. The problem is still there. It crashes consistently on display > of many pages. The one I test is Edit -> Preferences. It crashes > immediately without going into the dialog. The error console shows: > > [Exception... "Component returned failure code: 0x80004005 > (NS_ERROR_FAILURE) [nsIPrefBranch.getComplexValue]" nsresult It looks like getComplexValue() is to do with getting your user prefs. Try closing Firefox and Thunderbird, and then mv ~/.mozilla ~/.mozilla-old and restarting them, see if the problem is gone... -Andy