Last night while using my PB, it suddenly turned off. Upon connecting the power adapter I found that it hadn't fully shutdown and acted like it was coming out of sleep. I check out CoconutBattery and System Profiler and see that my maximum battery charge is now only 22% of what it used to be. I have owned this laptop for a little under a month now. I did some reading on the Apple forums and I think I'm going to take advantage of my 1 yr AppleCare and just ask them to put a new battery in it. I have recalibrated the battery and when I normally use my PB I run the battery down until I get the warning, then plug in the adapter, rinse and repeat. Am I overlooking anything here?