anyone had issues running 4x1gb with this mb?ive a friend thats having major headaches getting 4x1gb team d9s to run anything over 800mhz 4-4-4-12.with 2x1gb everything was fine.he was running 1000mhz 4-4-4-12 24/7 no probs but now with 4x1gb he cant even post at 800mhz same timings and voltage?any idea what may be the issue?