Since one of the nice things about owning a Mini over a tower is the lower electricity bill, I am wondering, does the power block for a Mini actually sleep? The power supply in a modern tower under deep sleep draws nothing but the trickle needed for sensing a hardware stimulus for waking (keystroke, mouse movement, power button, etc.), correct? But what about the Mini block during deep sleep? And likewise, if you've got a permanent setup booting a Mini off of an external Firewire drive, does the Firewire drive's power block go to sleep during deep sleep? Power blocks and wallwarts continue to draw significant current just by being plugged in, whether or not the appliance is turned on. Is that still the case with the Mini and Firewire drive PSU's?