Well i sent my new MacBook back to Apple to have the upper casing changed due to discolouration on Thursday and today i got it back! What quick service! Im so impressed too! The new plastic isn't as smooth as the old but its definately worth the 4 days it was away! They not only changed the casing but also have a new keyboard and mouse etc... ( not sure if its all one piece or not ) Anyone whos got the same problem with the discolouration and hasn't sorted it i really recommend that you do... HeHe this is the first Mac i've had and im so impressed with Apple and the service i'm definately not going back to a normal pc EVER!