Comment 7 for bug 931967

If the regression started a week ago due to compiz, that would narrow it to this update:

upgrade compiz 2012-02-14 10:46:44 1:0.9.6+bzr20110929-0ubuntu8 1:0.9.7.0~bzr2995-0ubuntu1

One way to isolate this better would be if someone able to reproduce this would test downgrading to the earlier compiz and verify the bug goes away then.