My PowerBook is just over one year old and a couple of weeks ago while on vacation the battery went from holding a good 2.5-3 hour charge all the way down to 30-40 minutes (if i'm lucky.) This seems pretty unacceptable and not normal for one year of use. I've had it plugged it for a large amount of the time as well. I'm planning on taking it down to the Palo Alto store today. I've done the whole recalibrationg thing a few times and nothing happens. Does anyone know how AppleCare/in store help will most likely react?