I'm facing the exact same issue. Its Lucid's RC pre-release. Graphic card is ATI Mobility RADEON HD 4670. And of course its happening with free driver. Propriety is way too slower to have actual Compiz stuff running.
-- Xorg freeze lucid daily build ATI Mobility Radeon HD 4670 https://bugs.launchpad.net/bugs/568103 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