Compiz 3.4 behaves a lot better - to the point where it's the workspace switcher that appears to be broken, especially when Compiz is set to only one viewport but four workspaces.
-- Use workspaces instead of viewports by default https://launchpad.net/bugs/74767 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs