Random X crashes: fact or fiction?

[Bojan Smojver]

As of about 2-3 weeks ago, I'm seeing random crashes of X under heavy
load (e.g. kernel compile in an xterm, Firefox, Evolution being started
etc. - all under Gnome). X simply dies and I end up on VT1, after which
X gets restarted (i.e. GDM). Obviously, all the processes running inside
X die too. This is with up-to-date Rawhide in i686 with Radeon IGP M340.
The most recent crash was during kernel compile this morning, with all
the recent packages.

Before I start digging around trying to figure out how to report this
for real, just wanted to check if there are other people that have
observed similar stuff with recent X. Just making sure I'm not going
crazy here...

-- 
Bojan