Hello, and apologies if this question has long ago been asked and answered... I have an iBook G4 running OS 10.4.11, that has just had the hard drive replaced. When the computer goes to sleep it will not wake up, an in order to restart it I have to disconnect the power adapter and close it. I have it set to put the computer to sleep never, but eventually the computer--or at least the display--will sleep and not wake up without a restart. Is this a common problem, and is there any fix I should try? Any suggestions are welcome. Thanks!