The YoYo power supply on my PowerBook G4 400 died recently - there was a loose connection in the wire at the connector so it was irrepairable. I bought a new one (which I assume is an Alumininum PowerBook one) which is a white little brick with little legs that come out that you can wind the wire around (not that I do). BUT, the machine runs really hot now - I can actually feel the heat through my desk when my knee touches it!!! It's 65 watt (which is what the old one was) - any ideas why it might be doing this - I really can get third degree burns off the underside of the thing when I pick it up at the end of the day.