I have the same problem, with identical backtrace in Xorg.log, but on different configuration:
Kubuntu 9.10 x86_64 ATI Radeon HD 3400 Series Composition turned on (KWin desktop effects) On my system, the bug occurs only in one place: 1. New email received in Kmail 2. I try to make a selection of some text in received email, X crashes completely, even Ctrl-Alt-Fn is not functional. Note: in 99% of cases, email where crash happened is lost, so take care if you are testing. It does not happens always, but enough frequently that it is annoying. I even try to never start selection on a newly received email in kmail. -- Ubuntu 9.10 Crash in /usr/bin/X(FindGlyphRef+0x2c) [0x5277cc] on nvidia nvidia-glx-185, SMP quadcore https://bugs.launchpad.net/bugs/479031 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers-180 in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp