This is not a duclicate of the compiz bug (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/550850). I have the same problem on KDE4 (Kubuntu Lucid) and I don't have compiz installed.
This is not a duclicate of the compiz bug (https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/550850).
I have the same problem on KDE4 (Kubuntu Lucid) and I don't have compiz installed.