Hi, In it I see For AppleCare owners: Your computer must retain at least ONE stick of Apple-branded RAM to continue to qualify with AppleCare. For 12" PowerBook and iBook owners, the logic board RAM satisfies this requirement. For all other computers the Apple-provided RAM must stay with the computer until AppleCare expires. But how does this affect systems that only have one ram slot? Can someone shed some light on this? Thanks.