On Sun, Sep 12, 2010 at 11:58 PM, Adam Williamson <awilliam@redhat.com> wrote:

Check kernel logs and X logs after rebooting, see if there's crash
notifications in either. (You'll want to look at /var/log/Xorg.0.log.old
rather than Xorg.0.log). What's the gfx card?
Thanks, I'll check that out, though I doubt that there'll be anything... I have intel 945. Another interesting thing is, I logged into a different account (which I use to testing/playing around) that currently has gnome-shell (as opposed to composited metacity) and so far after more than an hour no freeze. I'll see if it's still running tomorrow.
 
Martin