I own a Powerbook G4 12" and am currently running OS X 10.4 About a year after I purchased it, the battery that came with it stopped taking a charge. I scoured different message boards and Apple's web site for answers and came up empty. So I bought a new battery, and now, a month after having the new battery, I'm having the same problem. I've tried removing the battery, updating my software, and all the other suggestions the Apple web site offers. Right now my battery is stuck at 4% and when I click the battery icon it is stuck at "Calculating... until full." Has anyone else had a problem like this or been able to fix it? I bought this laptop for convenience because I'm on the road a lot, but without a working battery it might as well be a paperweight. This was my first Apple product and I've gotta say I'm pretty disappointed. I don't think I should have to shell out another $120 for a third battery.