Comment 3 for bug 242438

Ok, I've found a workaround. Just download and install manually compiz-kde_0.7.4-0ubuntu7

https://launchpad.net/ubuntu/hardy/i386/compiz-kde/1:0.7.4-0ubuntu7

This package is suppose to be in the repositories, I don't know why the compiz-kde_0.7.4-0ubuntu6 is still there...