Ok, this just happened again when using google maps. I did an ls -lahtr /var/log to get the latest logs that had been written and found this near the bottom of the syslog:-
Apr 25 18:15:47 xeon8 gnome-session[16407]: Gdk-WARNING: gnome-session: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.#012 Apr 25 18:15:48 xeon8 bluetoothd[944]: Endpoint unregistered: sender=:1.219 path=/MediaEndpoint/HFPAG Apr 25 18:15:48 xeon8 bluetoothd[944]: Endpoint unregistered: sender=:1.219 path=/MediaEndpoint/A2DPSource Apr 25 18:15:48 xeon8 bluetoothd[944]: Endpoint unregistered: sender=:1.219 path=/Media Apr 25 18:15:51 xeon8 acpid: 1 client rule loadedEndpoint/A2DPSink Apr 25 18:15:49 xeon8 acpid: client 16254[0:0] has disconnected Apr 25 18:15:49 xeon8 acpid: client 16254[0:0] has disconnected Apr 25 18:15:49 xeon8 acpid: client connected from 5665[0:0] Apr 25 18:15:49 xeon8 acpid: 1 client rule loaded Apr 25 18:15:51 xeon8 acpid: client connected from 5665[0:0] Apr 25 18:15:57 xeon8 rtkit-daemon[1823]: Recovering from system lockup, not allowing further RT threads. Attached is the full syslog. ** Attachment added: "syslog.txt" https://bugs.launchpad.net/ubuntu/+bug/980519/+attachment/3103720/+files/syslog.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/980519 Title: Random log off in Ubuntu 12.04 LT Beta To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/980519/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs