the bug is affecting compiz 0.3.3-0ubuntu2~git2006112 from the universe repository. I've also tried compiz-freedesktop 0.3.5 from other repositories, which have the same problems! I have everything from ubuntu feisty repository. And I have a radeon mobility 9700. Of course I'm using the opensource driver.
It is possible that the bug is only caused by the driver, since these hi cpu usages are detected also without compiz enabled -- Very hi CPU in firefox and gnome-terminal https://launchpad.net/bugs/73473 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs