installing xserver-xorg-video-nouveau (1:0.0.16+git20110323.8378443b- 0ubuntu0sarvatt) from the x-edgers ppa seems to solve the problem for me. can the fix please be backported?
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/659473 Title: gitk crashes entire X session _______________________________________________ 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