Bug#630143: pu: package xserver-xorg-video-tseng/1:1.2.3-2+squeeze1
The tseng X driver appears to be entirely broken in squeeze. See
https://bugs.freedesktop.org/show_bug.cgi?id=32682 for the details, and
for the fix. We should probably get that fixed in a stable update.
(Patch would be identical except for the obvious debian/changelog