It has been happening for 3 days now, my MacBook will decide when it wants to charge and when it doesn't. At first I thought it had to do with it doing some prosesser intensive stuff but today just under a normal load (10% of CPU) it still won't charge (which is a problem cuz im at 4%). As I have been typing this the LED light on the MagSafe cord is blinking erraticly. 2 weeks ago I installed 2 gigs of ram and everything has been fine so would that have anything to do with this? EDIT: Ive tried restarting it, and making sure there were nothing in the MagSafe port.