After six months of owning the MacBook Pro with retina display I am now having problems with my MagSafe power adapter. Occasionally the power doctor will not light up at all and there will be no indication of my MacBook Pro charging. Apple is going to send me out another MagSafe but I'm just wondering if anyone else's experiences in case it's not just the MagSafe. Also if you look at the MagSafe there's a bit of discoloration almost like burn marks but there's no indication of a burning smell or anything like that.