https://bugs.freedesktop.org/show_bug.cgi?id=28932
--- Comment #5 from Darin McBride Tanktalus@gmail.com 2010-07-21 10:18:47 PDT --- KDE devs recommended turning down my "Texture filter" from trilinear to bilinear, and I've not got any crashes since. Hopefully that helps narrow down the problem?