I still have this problem with Kubuntu Beta. I think that franceloc's solution should be used in case it isn't solved until the Feisty Fawn final release date.
-- Lockup problems with ati driver on Radeon M300 https://launchpad.net/bugs/30447 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
