Somebody in the thread at some point said: >> 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... > > I already did that and it does not solve the problem. Hum, well two ideas: see if this changes anything $ firefox -safe-mode and $ strace firefox to see if we can get a clue. Also... is about:plugins one of those things that crash? What plugins are listed, if not? -Andy