Like BioShock 1.5b4 was crap for me also. Blue screens for unknown reasons and anyone notice the Board temrature with 1.5b4? Mine was up 8 to 10 degrees from 1.4 or even 1.5b1. I was seeing on my board 42ish at idle compared to 32ish before and after 1.5b4. So I dropped 1.5b4. Thought I would share the temprature difference I noticed. I wonder why I was higher with the same OC settings? Hmmmm