Along with the magic of my iMac staying awake during a 10 second power outtage... I've found another strange Mac power. Even though the power scheduler isn't in use my iMac always turns itself back on at either 5 minutes past every hour, or an hour after it's been off (haven't experimented with it yet). It's a little annoying. I was dozing off to sleep and DUUUUUN - it woke me up! Could there be anything telling my machine to automatically turn itself on?