I'm sure this has been posted before but I haven't been able to find any solid answer. I have a Mac pro early 2009 2.66 quad. This is my first Mac pro and I just picked it up. It seems to make a click when I push the power button. But nothing seems to wrong per se. Everything starts up fine. Although when it went to sleep I woke it up and made the same single click. It's seems as though it draws a good amount of power for a very short time on initial start or restart. Any thoughts/ideas on the matter are appreciated.