Comment 9 for bug 733346

After today update of the intel driver, I experience only X hang-ups instead of crashes (again after the screensaver interrupt, if the "Suspend desktop effects for fullscreen windows" is ticked on).
I now looked in XOrg.0.log and found the following lines there

[ 18468.582] (WW) intel(0): flip queue failed: Device or resource busy
[ 18468.582] (WW) intel(0): Page flip failed: Device or resource busy
and then X hang.

This is probably due to the unstable page flipping in the intel driver and is tied to this bug:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/737602
My video card is 82G33/G31 Express integrated Graphics Controller

However, the crashes do not happen anymore for me, so now I cannot say the page flipping issue is indeed related to this bug.
There may be multiple issues. It is better if the original reporter retests this with compiz.