Okay, well i have 4x1gb Crucial Ballistix Tracer 8500 in my Asus Maximus Formula board and have had no problems to date. I have my FSB at 350 with a 9x multiplier. I set the RAM timings to 5-5-5-15 @ 2.2V with the frequency set to 1033 (?) - can't remember the exact frequency.
I purchased the first 2GB last september and the second set of 2GB about 2-3 weeks ago. I notice the new set has different heat spreaders on and i can vaguely recall reading somewhere that crucial had done a revision to tracer memory to sort out some of these issues? (correct me if im wrong).
Prob worth mentioning that during this time i have only had one crash (playing Titan Quest) and that was with the 4GB with the above setup....... but it has never BSOD on me. Also sometimes after long gaming sessions it can get quite laggy, but if i pause and leave for 5 mins then resume the lag disappears, which probably means its a heat issue.
Just so you know, the vDIMM overvolts by about .08v....so you're really putting almost 2.3v through your ballistix