Hello all - I just purchased a 15" MacBook Pro to be used as a desktop replacement; thus, it is connected to an external monitor and never leaves my desk. Do you think I should power it down at night, or just let it sleep? I've always kept my PC towers on 24hrs/day, but I'm slightly concerned about the amount of heat that the MBP is generating. I'm guessing that the amount of heat it would generate while sleeping would be trivial, but I'd figure I'd ask anyway...I do plan on getting an XPad to raise it a few inches off the desk, just 'cause I'm paranoid like that...