Comment 16 for bug 760769

I see this as well, it occurs anywhere from every half hour to every three or four hours. Dell Inspiron 1520 with Intel integrated mobile graphics. No keyboard input is accepted, I can move the mouse but nothing responds to any clicks, even the seconds on the clock are stuck. I've been rebooting from the console to remedy the issue, I'll try compiz --replace and report back next time it happens. It only happens on this machine, so I'm guessing it's somehow related to the graphics card. I'm surprised this hasn't received more attention. . .