Ive got a black Macbook and had it for about a year or so, just recently i noticed the casing had chipped off a little bit on the bottom left, where your wrist would rest and where the little ridge at the top of the screen meets the corner when closing the laptop, the crack is about the same size as this ridge as well

i havent dropped or knocked it so im just wondering if there have been reports of this type of problem, also can the panel surrounding the keyboard be changed?

my pad button has started going as well, it does double or triple clicks most of the time, i'm still under warranty at the shop i bought it at so...

thank you for any help