Mine has a black bezel so I had to look under a bright lighting source. Mine is tight all the way around. I have zero light bleeding so maybe it's the same glue issue that some have had. Apple is already looking into that, maybe this is related.
It's clearly a construction issue that could not be remedied at a store, so plan on getting a new iPad 2 whenever you take it in. Be sure to back the old one up.
Just enjoy it for a while until the stores have more stock. You have a year, but don't wait too long. If you exchange sooner than later you have a better chance of getting a new one rather than a refurbished replacement.