My 17" MBP keeps shutting down on me runnning on just the battery. Its running fine when the ac adaptor is plugged in. This is just happening now! It's on even 2 months old!

The computer recognizes the battery, and it's fully charged too.
When I turn the comp on with just the battery, I can hear that apple start sound and the blue light on the latch button, but then after 1 sec it'll shut off...
Called Apple and they said it might be the hardware not recognizing the battery but the computer does recognizes the battery. I just wanna know if this has happened to anyone here yet.. cause im still at school now and dun have time to go to drop by at the Genius Bar till tomorrow
