I've just come across the Scheduled startup option in Energy Saver and I'm wondering how it works. When the system is shut down, what keeps running to know when to start the system up? And does having it turned on make the mac use more, albeit just a tiny bit more, power when turned off than usual? Just asking out of curiosity. Edit: A slightly more practical question too: is it possible to set different times for different days? If so I might start using this as an expensive alarm clock!