Random freezes

Update 2:

I finally found the reason for the freezes. More info: http://bugs.archlinux.org/task/10979

Thanks to dolby for asking me to update to testing. Now I can really use my Arch.

Update:

The problems still occures, but now I've set up a process logger because before the freez conky showed me 100% CPU. Then it went to ?2.147.483.648% CPU and froze. We'll see which process it is. (hopefully)

Old Post:

I'm using Archlinux for some days now and lately experienced something really odd. While watching videos, surfing or chatting my computer freezed randomly.Sometimes after 30 minutes, sometimes after some hours.

At first I had no idea what caused this, but after some hours of googling I found out that newer Nvidia drivers don't work very well with Compiz. I also found an article describing a way to fix this, but it didn't work for me. Sadly.

Since I knew it is caused by Compiz I tried disabling it, but that caused an instant freez. When I rebooted and logged in with my user it froze just 5 seconds after entering the password. I rebooted again and it froze just after entering the pass.

The only way to get rid of Compiz was to hit Alt+Crtl+F1 and remove it without logging in on the X-Server. Yet I haven't had any freezes.