I just got my mobile 2600. Right out of the box it does 2.4 at 12x200. Any higher and I get a windows error and B.S.O.D. I did the L12 mod and my temps never get above 41-43 under load. My memory timings are 6-2-2-2 but even at 11-3-3-3 I still cant go any higher. I dont think it is a heat issue as its always a windows error. Any ideas? Thanks.