Are you still using dapper, or have you tried edgy? Not that it would matter much, but I have another brand laptop using the same graphics card and have not had any hangs with either dapper or edgy.
-- ThinkPad X32 freezes often after upgrading to dapper https://launchpad.net/bugs/55570 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs