Crap.. you're right! Mines doing it at the bottom left ;-;! Thats terrible

Problem with taking it back is that software which you register may not work on the new device... so thats a hassle in itself (getting the new codes) :\
I dont believe its serious. Theres no real risk of it completely peeling up. What it is... is that the actual surface is stuck onto a foam backing which is what gives it its springiness. The foam doesnt appear to go right to the edge, so theres about half a millimeter of surface plastic overlapping around the edge which can be easily creased/ bent out of shape. It just looks kinda ugly, but I dont think theres any risk of it becoming worse.