It sounds like those that are receiving their batteries are 15" PowerBook owners. Any 12" PowerBook owners get their replacements yet? I registered the first day of the exchange, but haven't received my battery yet. I really have no choice but to use my old battery in the mean time as I need my PowerBook for/at school. I figure it hasn't blown up in the nearly 2 years that I've had it, seems unlikely that it would now.