It's definitely something with system RAM
2 GB = 18 hrs before crash
4 GB = Almost 2 days before crash
8 GB = Over 3 1/2 days and still going....
However, I noticed that according to task manager it's not using that much memory. Very odd.
Does anything change if you increase swap-size? Memory leaks may be swapped away.
Alternative: take 2 GB ram and run oclvanitygen a few hours, then restart it. Repeat that and see if it crashes again.
Also, dose anyone know the reason why it's using 50% CPU when all I have it doing is mining the the graphics card?
Here it uses full CPU while mining on Nvidia. I assume it needs CPU to deal with the keys it finds or something. So the videocard just produces millions of keys per second, the CPU checks if they are the right keys. But I'm just guessing here

Edit: after reading shorena (see below) I am curious now what the CPU is doing
