Ok so I've been using a macbook white for a few days now, I am trying to figure out if i decide to actually buy one because the one im using is my friends. Is there anything I can do to decrease the strain of watching youtube and movies on the CPU? when watching youtube the macbook uses 50% of the cpu in safari to watch a youtube vid and when watching a movie it reaches into 90% of the cpu being used and the fan cuts on. If this is what I mainly use my macbook for would all the youtube videos and movies send the macbook into over heating hell? I just dont want to invest into a macbook if it wil cause it eventually to die out because it wasnt built to handle youtube vids and movies.