Comment 10 for bug 448084

I had this problem too. I've only had this problem very few times and started when I first used Jaunty.
I wonder if it's related to the programs I had done and had opened when I last logged off? I had a pdf viewer (evince, I think) and was trying out a "wmblob" program which was still open when I shutdown. Also, I tried a workaround for another bug before shutting down (https://bugs.launchpad.net/ubuntu/karmic/+source/udev/+bug/463347). After that, I tried a livecd (which shouldn't affect anything, right?), and when I rebooted after that, the crash and only the pdf viewer were there.