Hi, I have a 15" CD 2.16 MBP and lately the strangest thing has been happening... My computer is fully charged, then as I'm working while using the battery when the power is around 30% left the screen goes dark like it's sleeping, so I hit some keys and when it powers up all of the sudden the battery charge now reads 0! So it's like going from 30% to 0% in an instant. Do you think this has anything to do with the recent software update for MBP that supposedly "fixes charging issues" because I never had the problem before, or is there something else going on? Thanks!!