I returned it to the Best Buy where I got it, and the fellow there kindly went through several other units to see if they had the same problem. He opened up I think three others, all of them had it. Even their demo unit had it. That said, all of these were the blue models, and their demo unit of the pink color did not have the problem as far as I could tell. I don't know anything about manufacturing this stuff, so I have no idea if that's coincidence or something about the colors that makes blue (or black?) more susceptible.
I decided I still want it, so I'll take my chances one more time and stick the thing in a case. Hopefully Samsung acknowledges it and maybe provides a remedy. I mean, it's not exploding or anything...
...yet.