I have a dslite, my wife has a dslite, and my niece has one as well....no problems just yet...of course I don't spend much time looking at the hinges....the screens are so pretty.
Well, my dslite got a crack like a week after i posted that it had no cracks. But it really wasn't a big deal. just cosmetic. Well, I have been playing this thing everyday since i bought it at launch. I have been really busy lately and did not play it on thursday of this week. On friday i started it up and noticed a oval in the center of the top screen and I don't know how else to describe it. It is some sort of damage.
Anyway, I called Nintendo immediately and the lady said she would do me a real big favor and fix it all for free. She said that in the future damage to the screens are usually not covered under warranty, but, since i had a cracked hinge,
this could have led to screen damage.
I don't know if this is really true, but I take really good care of my dsl and there is no way that I could have caused any screen damage. I'll try to take some pics before I send it off.