Another data point - the problem doesn't seem to occur with Fedora 13:
xorg-x11-server-Xorg-1.8.0-12.fc13.i686
xorg-x11-drv-intel-2.11.0-4.fc13.i686
kernel-2.6.33.3-85.fc13.i686
So it appears that the problem was inserted in the 2.12 release of the Intel DRM module / 2.6.34-2.6.35 release of the kernel.
Another data point - the problem doesn't seem to occur with Fedora 13: server- Xorg-1. 8.0-12. fc13.i686 drv-intel- 2.11.0- 4.fc13. i686 2.6.33. 3-85.fc13. i686
xorg-x11-
xorg-x11-
kernel-
So it appears that the problem was inserted in the 2.12 release of the Intel DRM module / 2.6.34-2.6.35 release of the kernel.