The problem has gone away for me. It's been stable for a few weeks now. However I have no idea which update to Gutsy fixed it. I'm still running Kubuntu Gutsy 64, Compiz and the nvidia proprietary driver.
-- [Gutsy] desktop and keyboard freezes while mouse is moveable https://bugs.launchpad.net/bugs/138094 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs