Hi Ralf, About 3 years ago, you reported a bug to the Debian BTS regarding DRI r128 not being reliable on kernel 2.6.6 and causing kernel oops. Even if the X server might be doing something wrong, a kernel oops would always mean that there is a bug in the kernel. Anyway, did you reproduce this problem recently? If not, I will close this bug in the next weeks. Thanks, Brice