Comment 4 for bug 491572

A lot has changed in the radeon drm driver between the time of the last comment and now, so this bug may no longer be relevant. It would be good to re-test with the 2.6.33 drm if it is.

In any case, I don't see really solid evidence of it being caused by a bug in mesa; if so it would be good to see that tested with a newer version. But meanwhile I'll close out the mesa task; the kernel task is probably sufficient for now.