Comment 177 for bug 276990

James,

Your backtrace corresponds to that seen by Zizzle (in
<https://bugs.launchpad.net/ubuntu/+source/linux-backports-modules-2.6.27/+bug/276990/comments/87>) modulo kernel version differences, but not with any of the other kernel panics shown in this bug report or the ones I can find being discussed upstream. I would suggest filing a new bug report and attaching your screenshot, so that this crash can be traced separately - it does appear that the problem has been addressed for most users.