My 60w magsafe adapter (for mid-2010 white MacBook) gets extremely hot when charging - so hot that I can't hold it for more than a few seconds before dropping it. I've Googled a bit and it seems to be a fairly common issue, but I'm still confused why some people have it and others don't (my friend has the same charger model but it doesn't get hot at all). I recently sent my MB in for repairs because of a failing logic board, and I've been wondering lately what might have caused it to happen, other than just bad luck. Can an abnormally hot charger physically cause damage to my computer? Should I buy a new one just to be safe?