Comment 6 for bug 992795

I just want to add that this only seems to affect 3D versions. could this have anything to do with Compiz? I'm able to watch videos without logouts using Gnome classic or Ubuntu 2D. I've tried this with Nvidia drivers: 280.13 (in 11.10-x86_amd64) without any issues, 295.40 both in 12.04-x86_64 and 11.10-x86_64 having 3D logouts, also 295.49 & 302.07-beta with logouts.