Looks like I have it bad, although not as bad as above, as well
...
On the left hand side.
On the top right.
Really bad on the bottom right.
Stitching on the top side, almost expected to be fair, but not with the above problems.
It seems to be the glue they have used has dried up along the edges. If the mat was to be pushed at all whilst sitting on a desk, it would pull more of it up and off.
On another note, the 25mm deep one is going to be uncomfortable for anyone other than folks with deep keyboards, as 25mm is a fair distance. The medium softness feels pretty solid as well, and as Twirlywoos mentioed, the fabiric is the wrong type if you have anything on your wrists, it's not going to be long before it even gets worn through at all. I needs to be made with the same fabric as the mouse matts, something hard wearing.
I'm going to post in the CS thread, but just wanted other people to be aware of this and check the underside of the pad.
EDIT: The full size rest also doesn't feel long enough... if you align it up correctly, anything left of the W key and you are writing on the slope of the rest, which makes it pretty uncomfortable. Anything past the number pad on the right has the same effect... could really do with being maybe 50mm longer. Not overly impressed, even if it is just £15 (considering the mouse matt was £15 and that utterly fantastic). Gloryless I think....