Hi The problem seems to be solved in the new kernel version in unstable (linux-image-2.6.30-2-686). Here is the extract from the changelog :
[ Ben Hutchings ] * intel-agp: Fix cache flushing on i8xx chipsets, avoiding graphics corruption and GPU lock-ups (Closes: #541307) Cheers -- Sylvain Archenault -- To UNSUBSCRIBE, email to debian-x-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org