This could either be a hardware or a software topic, but either way, this is odd. After installing Safari, I noticed a sort of motorized Ka-chunck sound coming from my dual 1.42. I suppose it could be best be described as a different sound from the usual "purr" of the box. I rebooted a few times to make sure it wasn't some odd glitch that would fix itself. It wasn't the clicking of a seeking HD either. Anyway, I took Safari off the machine as it was the only thing I'd changed from the "no-odd-sound" period to when the sound started (immediately after as far as I can tell). Once Safari was off, and the machine rebooted, no odd noise. What the heck? Any ideas as to what's going on there?