Comment 6 for bug 773861

Nick, please try ppa:vanvugt/compiz (https://launchpad.net/~vanvugt/+archive/compiz) which contains several related fixes that are being planned for Ubuntu 12.04. If the PPA works then this is a duplicate of one of those bugs already being fixed (not sure which).

If the PPA does not solve this problem for you then please change the status back to Confirmed...