For more then an hour at a time. I am using it as an itunes server mind you but it should be able to sleep then be woke up by a request by my phone remote or my apple tv. But it keeps waking up. I have wake on lan turned on. If I turn this off will i still be able to access my itunes share? in the console it tells me wake reason (network) I expect this but why wake up? i'm not home and not using anything and previous sleep cause : 5 I am beginning to think I can't have the machine go to completely asleep and still have access to my itunes share.