Hi Brice,
I was googling this exact same backtrace and though I would share my
findings.
It seems that this exact same backtrace happens on my desktop with
it's NVIDIA 8800GT proprietary driver installed.
Given the same backtrace is seen on a machine where the intel driver
package isn't even installed let alone used, doesn't this place the
blame with some certainty on the xserver itself?
It's a really annoying bug that shows up at least 4 times a day if
not more for me.
See this as a reference:
http://www.nvnews.net/vbulletin/showthread.php?p=1589973
