So last night the adaptor for my macbook (I believe it is a 2008 model at least thats what the guy said when i was upgrading my ram) just stopped charging. It will charge sometimes if I have it closed and I don't touch it for a while. I just wanted to make sure this is the right chord before I order charger It looks right but wanted to make sure there werent a bunch that look the same but work differently. Let me know asap please so I can order replacement. ~TIm Edit: also the reviews for basically all of these adaptors have a few that say it stopped working after a few weeks. is there something I should be looking for a quality one? does wattage matter? Editagain: I just read that they used to have a policy that you can go into the store with the charger and they would replace it for free? This true? Do they still do this?