Hi all, I have a 2008 Aluminium unibody macbook. Over the weekend I realised my macbook had stopped charging. When I inspected the charging port is looked burnt: and it had done some damage to the charger as well: Strangely it started charging a little while later, and has been fine since. Two questions really: 1) Is it safe to leave it as is? Or am I going to get surprise electric shock or wake up to a burnt laptop? 2) Why does this happen?