Well this actually happened a few years back (with 4 DS phats in a row). Here is what happened: Was playing Castlevania: Dawn of Sorrow (Actual legit store bought copy) on my DS phat, All of a sudden my DS made like a loud "pop" sound and just went dead. So I figured alright, battery must have died. So I go to plug it in and nothing, it won't respond to my charger. So I take the DS back and this happens again (So again, return the DS just to have it happen again for the 3rd time). So the final time I decide to take back the DS and the Game. So I get both replaced and all is fine until I get to about 8hrs into the game and then it does it again. After this point I gave up on the DS for quite some time (This was prior to the DS lite being launched, which of course got me interested in the DS again). So I ordered a new DS lite (Crimson & Onyx) it will be here tomorrow and I got LoZH and CoR as well, however I would like to grab up CoS again and play it before starting on CoR again (Both for the fact that I like to play games in the order they launch, and because DoS is one of my favorite DS games of all time), however I am nervous as to why this happened in the first place and if anyone thinks it could happen again? I kind of feel safe playing it since this all happened on my DS phat and now I have a DS lite, but also don't want to jump back through the many hoops of returns. Thanks for any incite on what could have caused this problem. It was so long ago now its not really a problem anymore and more of just a curiosity. Thanks for reading and any input.