The problem is gone when KMS is disabled. I've already upgraded, but I can reinstall if that will provide you with much extra info.
** Attachment added: "Xorg.0.log.no-kms" http://launchpadlibrarian.net/28742720/Xorg.0.log.no-kms -- [i855] No Xv support for 82852/855GM in Karmic https://bugs.launchpad.net/bugs/395932 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs