I've noticed this happening 3 times now. When I reboot the OS once and then start a video X freezes and the keyboard is completely unresponsive. So I can not get it to restart X or do anything.

The video however keeps playing in the background and sound is audible but the display is frozen. The mouse is responsive, cursor moves but can not click on anything.

I can ssh into the box fine, but trying to restart gdm via ssh doesn't help. Trying to shut down the system makes the screen go all fuzzy and I have to cut power to the system.

Now after I restart for the second time everything is fine. Videos play perfectly. I really don't know what the problem could be as its running quite normally. Any ideas anyone?

Thanks
Jilan