Comment 9 for bug 57344

I get this problem with default settings using the latest metacity in Edgy - I think this is a very important bug to fix before release as it can mean you end up in states that lock your control;

For example, if you click to focus on a qemu window but metacity doesn't give focus, the keyboard will then be disabled and you'll be unable to move the mouse away from that window (so you have to alt+f4, losing any work you may have had).