Hey, I have this odd problem with my new rMBP. Sometimes when I plug in the power cord my rMBP would not charge nor would the LED on the MagSafe 2 Adapter light up. I need to unplug it several times before it would finally work. One suggestion I read in the Internet was to start OS X in safe mode, but that really didn't help. Also one thing I notices was that the battery would charge even if it is still above 95%. I'm not sure if this is normal with the asynchronous batteries used in the retina MacBook Pros but all my last MacBook would not charge if they are still above 95%. Any thoughts or suggestions?