Hey guys. My battery meter in the top right corner keeps switching from Charged to Calculating. When I click on it, it shows a 99% charge. I've had my macbook plugged in for over an hour. Is this something I should be concerned about? Either way, the fact that it keeps switching back and forth is pretty annoying. Also, I've yet to calibrate my battery since I've bought the laptop, could this be the cause of the problem? Any help is greatly appreciated. Thanks!