https://bugs.freedesktop.org/show_bug.cgi?id=32456
--- Comment #4 from Chris bitbytebit@gmail.com 2010-12-17 14:56:15 PST --- I have this same issue, my bug report for it is here...
https://bugs.freedesktop.org/show_bug.cgi?id=32455
I have a full backtrace of the issue with a mesa debug compile