Looking here (http://ubuntuforums.org/showthread.php?t=1755642), I think my problem was caused when I re-enabled the fingerprint reader. I don't think I saw any crashes before I reinstalled...
-- 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