I'm not sure if this is my card's fault (I have a DS Linker) or if one of the games I got had an AP or something. But I basically have to keep my DS on all the time in order to play a game, because if I turn it off to save my battery, or to play another game, my save files will delete themselves. Does anyone know how to fix this problem? It's a bit frustrating when I was far in a few games and then poof it disappears. I'm leaning towards one of the games that is causing this and not my card, because I have had no issues with it and this happened after I loaded in a few new games. I just don't know which ones they are since it's been awhile.