Xserver core dump (xf86-video-intel)

[Iain Hibbert <plunky%rya-online.net@localhost>]

Hi

with new Xserver of last week (updated 6 dec) I get a crash when viewing
certain pages with a firefox previously built (don't know if thats
relevant)

I'm not sure what it is on the page that causes a failure, but it is 100%
reproducable at eg "http://www.failblog.org/"; => SIGSEGV, and the
Xorg.core file backtrace is invariably

#8  <signal handler called>
#9  0xbb4591e9 in i915_batch_flush_notify () from 
/usr/X11R7/lib/modules/drivers/intel_drv.so
#10 0xbb4594fa in i915_check_composite () from 
/usr/X11R7/lib/modules/drivers/intel_drv.so
#11 0xbb358a03 in exaCompositeRects () from /usr/X11R7/lib/modules/libexa.so
#12 0xbb35931e in exaComposite () from /usr/X11R7/lib/modules/libexa.so
#13 0x0814f9f7 in DamageRegionAppend ()
#14 0x08132ed5 in PanoramiXRenderReset ()
#15 0x08091100 in Dispatch ()
#16 0x0806d4f9 in main ()

The hardware is a T60 laptop with i945GM graphics, anybody any clue as to
what I should look towards?

iain