Comment 4 for bug 438435

System environment:
-- chipset: 945GM/GMS/GME
-- system architecture: 32-bit
-- xf86-video-intel: see below
-- xserver: 1.6.3
-- mesa: 1.4 Mesa 7.6-devel
-- libdrm: 2.4.12+git20090806.d74c67fb-0ubuntu0sarvatt
-- kernel: 2.6.30-8-generic
-- Linux distribution: (k)ubuntu
-- Machine or mobo model: sony vgn-g2 vaio laptop
-- Display connector: just a normal flatscreen, no external stuff connected

Reproducing steps:
happens about 80% of the time, sometimes it seems to stop

Additional:

(II) Module intel: vendor="X.Org Foundation"
· compiled for 1.6.3, module version = 2.8.0
· Module class: X.Org Video Driver
· ABI class: X.Org Video Driver, version 5.0
X.Org X Server
package version: 2:2.8.0+git20090814.926c7e7d-0ubuntu0sarvatt