I am horrified to share this but after close inspection under bright light I have noticed very small "stress cracks" on my black 16gig iphone 3g. I got it on launch day. they are very hard to see and look as if they are starting from the inside, working there way out. They are two "larger" cracks forming around the chrome headphone jack, and quite a few around the bezel. none of them being longer than a millimeter or two. I have never dropped or bumped it and only take it out of it's case to charge it. I would have included pics but I could not get the cracks to show up on my camera. I fear that these cracks will start to grow over time so I want to take it in to be replaced because this is obviously an issue with build quality. Have people been having luck getting these replaced at Apple Stores?