That's great. Thanks for the info. I think I don't have to worry about the FSB being reset after a day of it being shut down, because I am building a Linux box which will be running all the time. I have a question though: is that a one-time thing or does it happen every time you shut down for a day or so, and does it reset anything other than the FSB? Could it possibly be a weak battery? I know that's unlikely, but I was once shipped a computer with a weak battery and every time I unplugged it, it would lose time, and then it died and every time I shut it off I'd have to reset everything, which really sucked, because that happened around the time that windows decided to quit working and started continuously crashing. Perhaps what you are experiencing is a symptom of a similar problem.