Comment 8 for bug 346579

Confirmed on my triplehead setup running three separate x sessions on Jaunty 9.04.

I've also had some interesting instances where, if you start an application on one screen with the cursor active there, then move it off and wait for the application to request focus again (e.g, after a splash screen), it freezes xorg completely (audio continues to play, hard drives continue to spin, downloads keep downloading, etc).