Everytime my MacPro goes into sleep mode (either from activity for from me manually putting it there) it immediately clicks awake. Strangely, when I'm booted into Vista, it sleeps like a baby. Is there a way to figure out what is triggering this? I have a few wireless devices plugged in (mouse, keyboard, display) and bluetooth is off (I'd read that bluetooth headsets are a common culprit). Thanks in advance for any advice.