It happend for me as well, but I got a segfault. I attach my logfile. Unity is running, up-to-date 12.10. Machine was upgraded a couple of times and suspsened/resumed a bunch of times too.
** Attachment added: "Xorg.0.log.old" https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1060059/+attachment/3401219/+files/Xorg.0.log.old -- 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/1060059 Title: Xorg crashed with SIGABRT in ResFindAllRes() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1060059/+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