I had similar problem when I used the Leadtek nVidia GT220 graphic card on my desktop with the nVidia proprietary driver available from the Ubuntu repository.
The problem disappeared after I: - physically removed the Leadtek nVidia GT220 from my desktop - uninstalled the nVidia proprietary driver from Synaptics - used the Intel HD Graphics 2000 from my Intel Sandy Bridge i5-2500 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/778490 Title: Random logout after upgrading to Natty Narwhal 11.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
