the R4DS was working fine, I deleted all of my games and.sav files(well moved them to my desktop) so that i could put a different batch of games on there. When I went to add more games it told me the card was full. Its a 1GB card and there's only like 6MB being taken up by the most recent firmware. So there should be plenty of room on the card. I can try to re-format the card, but is that necessary if the card was already working fine? also,if formatting the card is what i need to do, can someone please tell me how? Any help would be greatly appreciated.