I just received my 12" PB yesterday from the Apple Canada store. I callibrated the battery already and I was wondering exactly how long I should expect my battery to last. I understand that Apple says it's a 5 hr battery life, but when I turned on my PB and let it sit there, it was only calculating about 2.5 hrs. Bluetooth and Airport extreme was off, there was no CD/DVD in the slot drive. No apps were running. Mind you, today was the first time I turned on my PB after callibration. But I'm thinking that that shouldn't matter to much. What do you all think? Do I have a faulty battery?