I have never, ever noticed this before. I was watching a DVD on my bed last night, using the Powerbook and I noticed a weird green flashing coming from underneath it. I lift it up and sure enough, there's a little set of flashing green LEDs on the battery! Doesn't do it all the time, maybe when just watching films or using the drive. There doesn't seem to be anything about it on the forums.
It's the little things....
It's the little things....