Comment 1 for bug 270880

I changed the affected package from cairo-clock to compiz, because I think that I get the same sort of behavior in other settings. For example, run Firefox and open a flash movie; then switch users.

Instead of switching users, you can also get the same behavior by doing Ctl-Alt-F1 to get to a new tty. Running top in the new tty then shows compiz using a large share of CPU, if there is an application running such as cairo-clock or a flash video in compiz.