So as it seems to be not specific to nvidia drivers, it is probably a Xorg bug... I'll try to run firefox in gdb, it may be useful.
The bugreport is already in the mozilla bugtrack (https://bugzilla.mozilla.org/show_bug.cgi?id=430091) but it seems to be quite inactive. Maybe a bugreport on Xorg would be useful. -- firefox-3.0b5 received an X Window System error: 'BadIDChoice' https://bugs.launchpad.net/bugs/220628 You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to gtk-qt-engine in ubuntu. -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs