Little Help - Rear bumper paint peeling?

Hi all,

I just noticed this morning on my rear bumper, it looks to have a bit of paint peeling.

Well, I think it is anyway. It hasn't been knocked and chipped away from another car as far as I can see.

Would this be covered under any type of warranty? Or would they claim its due to the washing / cleaning style that i use...

IMAG0082copy.jpg
[/IMG]