I have this problem, that I moved from Denmark to Brasil, and brought my Mac Pro, 8 core, which is a bit more than 1 year old. It has worked flawlessly in DK, but here in Brasil it has crashed a couple of times, and some times it won´t start up, a lamp blinks next to the turn on button and the fans are running intensively?? Could it be caused by different electricity?? What should I do?? Any suggestions are very much appreciated, thanks, Adam.