I got mine from Canada and have bought a couple of UK games and accessories, all works fine.
So much good stuff around at the moment, the Kirby paintbrush game is bloody fantastic, add to that Mario Kart, Lost in Blue, Castlevania and Advance Wars DS (possibly my most played game ever already, and considering I've been playing NHLPA 93 for ten years on and off now thats alot!) Then next year we finally get all the good Japanese stuff, Phoenix Wright, Under the Knife etc and not forgetting Animal Crossing.
Final_Maxim, you were playing a crummy EA license on a handheld built for original and concept rich games, what did you expect?!