So, I have my 15" MBP - with no issues at all. Battery times are fair - 3.00-3.30 runtime. I installed bootcamp, then followed by windows. Which at first seemed to work fine - but it kept saying "cant find battery driver" in XP. Anyways, it became quite unstable, so I finally deleted WinXP again, repartitioned with bootcamp and everything was bliss - EXCEPT my battery seemed f**** up all of a sudden. Could windows have caused this? Or just a freak coincidence?? (check out my battery-capacity in this coconut-image) EDIT: I have tried calibrating again - makes no difference!