http://anholt.livejournal.com/41306.html ()_- [ We do use ut2004. It does stutter with 2.6.31rc (unstable code) due to a performance improvement that requires a Mesa fix to avoid the stuttering. The Mesa fix has been undergoing review.]-_() }-._ He never mentions the fix. I haven't had time to look through the intel forums to find the thread with the discussion. Observations-_ Use of the rc kernels is a bad idea. You risk loosing functionality. Best practice would be to use 2.6.29 and back-port all the GEM revisions. ( compare the two kernels and copy source files from one to the other ) I used to do this a lot. To me 2.6.24 was the best so I'd port back all the junk I liked in the newer kernels. It's time consuming but worth it if you want to keep everything going. Think Red Hat here. Below is what I have: 1.mesa-git/glew-git 2.linux-2.6.31rc5 3.xf86-video-intel-2.8.0 Not much of an improvement. -- "it's worst than that he's dead jim, dead jim dead jim." Bones looking at the intel driver. On 8/4/09, Tom Chiverton