My 3 month old SR BlackBook is also peeling/chipping. Only the bottom case so far. Sigh.
If you google the issue you'll find that we're not the only ones. I plan to visit an Apple store sometime soon and ask them to replace the bottom case, which from what I've read on other posts, shouldn't be too difficult to convince them to do.
I expect it will get worse. Mine has steadily increased, mostly at the top edge of the bottom case. Not dramatic, but certainly annoying.
One of the reasons I'm waiting is that I'm not sure if I should just lobby for a complete replacement given the chipping, the off-kilter display bezel, the Airport issues, and the DVD Player kernel panics.
More sigh.