Strange system hangs, ati graphics card issue?

Question

So okay, I`ve bought a new laptop, installed arch (I don`t regret it), everything was fine and so on back then.
I was running 2.6.13 and ati-drivers 8.20.
No problems.
Then I have tried upgrading to 2.6.15.
I was able to boot, again, everything worked.
However after a hour or so system completely froze.
After reboot everything was fine again. For few hours.
Needless to say that I`ve downgraded to 2.6.13.
Yet again, everything was perfect.
Of course I couldn`t stay on 2.6.13 forever, so few weeks later I`ve upgraded back to 2.6.15.
This time I`ve download 8.22 ati drivers.
So far so good.
I`ve experienced freezing few times again, but it wasn`t so bad, one reboot a week, so I didn`t bother.
Now I`m on archck, using ati-fglrx-archck package (8.23.7-1).
System completely froze again, second time in two days.
# lspci
http://pastebin.com/594642
# lshwd
http://pastebin.com/594646
# dmesg | tail -n 100
http://pastebin.com/594655
cut from /var/log/everything.log (system froze somewhere around 17:30)
http://pastebin.com/594660
Any ideas of what`s the reason of these hangs?

Answer 1

Penguin wrote:moved to kernel & hardware
Some attention, yay.
Sorry, didn`t really know where to post this thread, it might be kernel/hardware issue, but might not as well.
I have no idea what causes these hangs, it`s just a guess that it`s ATI.
EDIT: There we go, system froze just as I was editing this message. I _really_ need help.
Here`s a bigger part of everything.log:
http://pastebin.com/595424
And here`s whole dmesg:
http://pastebin.com/595431