hey guys so I got to school this morning and im in class and all of a sudden you MB shuts off, thought that was weird because I fully charged it up last night. tried to turn it back on but nothing so i get out the wall charger and plug it in, it starts up and the battery is drained totally. open up coconut battery and system profile to find that my battery is totally F'ed system profiler say "check battery" under condition yesterday i installed a mac OS (im on 10.5.8) system update but other than that I have done nothing out of the ordinary. so yes my MB is oldish and I bought it when the unibody MB first came out ( like litreally the first day in stores ), so what are the chances of me going to the apple store and then replacing it? ya i know im crazy but i thought that remember reading something about 250 cycles and 80% health...blah blah.