Hi, I have an strange problem, when I login everything works perfectly. I can play videos with mplayer using xv and gl2 with no problem.
After some time it doesn't work any more.
The problem can be triggered by switching between full screen and window mode many times by pressing "f" key in mplayer.
The video will freeze and the audio will go on, after that I can no longer play any video using xv or gl2.
I noticed that if a make the window smaller the video appears.
To make everything work again I have to kill X (sudo killall Xorg).

I'm using Ubuntu 11.04 Natty Narwhal with an onboard Radeon HD3000 and fglrx drivers with compiz.
Any advice is appreciated.
Thanks in advance!