Comment 6 for bug 792849

I have these lockups on my Lenovo T520 as well. The system locks up completly but randomly. Nothing improved with the few sandybridge patches and the update to 2.6.38-10.

The only information I have, that this lockups occur running a compiz accelerated desktop.
Additionally these problems occured more often while usage of java applications (like libreoffice or oracle sql developer).

I am now testing whether using a metacity desktop improves anything.