I was looking through some of the blender bug reports and noticed this report and figured I would add some more info to it.
I originally ran into this problem on Ubuntu 10.04 around the same time you did, and filed a bug report at: https://projects.blender.org/tracker/?func=detail&aid=29230&group_id=9&atid=231 The problem seems to be gone for me now in Ubuntu 12.04, even if I svn up back to the same revision that I reported it originally in, so I am not entirely sure what actually fixed it (nvidia drivers, GL libs, etc.). Anyways, I mainly figured that I would at least point the people monitoring this bug report to the upstream one. Hope it helps. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org