Issue after fresh install of openSUSE 13.1

Hello everybody! Yesterday, I installed openSUSE and I'm loving it so far, there's just one small issue I'm struggling with at the moment and I'm not really sure what to do. I encountered the issue twice yesterday. The first time, I was just browsing the internet and then my mouse and entire GUI froze. I went to a TTY and ran top to see what the heck was going on -- it appeared as though xorg was using 100% CPU. So, I restarted hoping it was just a glitch. However, later on I experienced something similar. The entire GUI crashed including xorg this time. I had a look in the /var/log/messages file and I found this line:

Anybody know what's going on here? Any help would be much appreciated!

I'm using an nVidia Geforce GTX 650 TI Boost.

Thanks,
Simon