Is it normal for it not to start up straight away after it's been off, say, overnight? Mine takes a bit. Sometimes after holding down the button for a few seconds nothing seems to happen, so I have to try again. Then it usually goes to a black screen with a faint pic of the apple logo before actually starting up. However, after i have had it on for a bit and then turn it off and back on it turns back up quickly. It seems keeping it off overnight puts it into some sort of deep sleep where it then doesnt start as fast when you turn it on. Just wanted to clarify if this is normal behavior?