It's my first "solid state" mac, so I'm probably just in the dark about new ways of doing things, but does the nMP ever sleep?
There's no setting for sleep in energy saver and when I manually hit sleep in the apple menu the screen turns off but the cooling fan on the tower just keeps on going.
There's no setting for sleep in energy saver and when I manually hit sleep in the apple menu the screen turns off but the cooling fan on the tower just keeps on going.