My 20" G5 iMac has been in a local Mac shop (Apple authorized) for over a week waiting for a new power supply. They claim the power supply is backordered and say they have no idea when it will be available. I've been using Macs since 1985 and this is the first hardware problem I've had, but not having parts available for a current model just doesn't sound like Apple's style. Does anyone either know whether or not the power supplies are backordered or if you don't know, maybe how I could find out?