Noob question, but I am not a noob. I would like to here the argument between turning your system off, or letting it run 24/7. Please do not tell me about the amount of money I will save if I turn my system off. I just want to here about if you are for, or against. Myself. I leave my system on 24/7 That way, I do my virus scan, (Kaspersky, spybot.) Every morning at 5 AM, plus, O&O defrag does its thing.