Comment 15 for bug 147081

I guess it is the best to report it upstream but could you please check if it still happens with this unofficial package http://people.ubuntu.com/~bryce/Testing/intel/hardy-i386/xserver-xorg-
video-intel_2.3.1-1ubuntu1~bwh3_i386.deb (AMD64 http://people.ubuntu.com/~bryce/Testing/intel/hardy-amd64/xserver-xorg-video-intel_2.3.1-1ubuntu1~bwh3_amd64.deb) of a newer -intel driver.

To install it you have to remove the old i810 driver before.
sudo apt-get remove xserver-xorg-video-i810 xserver-xorg-video-all

And please regenerate your xorg.conf just to be sure.
sudo dpkg-reconfigure xserver-xorg

If you want to reset everything do the follow commands.
sudo apt-get remove xserver-xorg-video-intel
sudo apt-get install xserver-xorg-video-all

If it still happens with the newer driver attach a current /var/log/Xorg.0.log after playing a video file.