I just came across this thread in apple support discussions about the problems arising from the 12" powerbook recalled batteries and how they are not performing at par with the old ones that were recalled. I was currently looking to replace my battery again that's why I got to that thread. And so i noticed the dramatic fall in my powerbook's battery life too. i have 80 cycles and still going. mine lasts only 45 mins now. and i have been very diligent about battery care and calibration too. So how is yours doing?