I am seeing the same with the Edgy Live CD, and a Radeon 9600. The system freezes when X fires up, and the Live CD is not usable at all.
-- xorg DRI to hang with ATI 9600 pro https://launchpad.net/bugs/37678 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs