There is an xorg backtrace in the comments and attachments of this bug report so it is surely not a casper bug - reassigning it to xorg.
** Tags added: workaround ** Package changed: casper (Ubuntu) => xorg (Ubuntu) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/799238 Title: Xubuntu i386 and amd64 20110618 xserver abort To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/799238/+subscriptions _______________________________________________ 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