So, last night my MBP was working and charging just fine. Today, when I plugged in the magsafe adapter it wouldn't charge, in fact, it was like I hadn't plugged in the adapter. After a while, I noticed sometimes it would charge. Like for maybe 2 minutes with the orange light ok. And then it stops. I've tried resetting the SMC and PRAM and obviously turning the MBP off and on again. Since nothing was working, I turned it off and left it alone for a few minutes (the battery was on 32% at the time). I kept checking and sometimes the green light was blinking and sometimes the orange light was on, not blinking. I turned it on a few minutes ago and the battery was at 42%. System information changes accordingly as the light goes from blinking green to steady orange. I live in Brazil, so the closest genius bar is a few countries away. I'm here just hoping someone will say it's a magsafe adapter problem and not a motherboard problem (I have an early 2011 13' MBP - with Mountain Lion - so it is already out of warranty). - just out of curiosity, as I was writing this post, the light went from blinking green to steady orange about 4 times.