yeah the same sort of thing happend to me. less than 2 weeks of having my ibook, i tried to wake it from sleep and got no response. i called up selfridges where i got it and they talked me through taking teh battery out , putting it back in, and then it was fine. but gave me bit of panic. still dunno what the problem was. the man said that that ibook had got caught between sleep land and awake land :S