Ok, I am nearly at my wits end here. Yesterday I finally busted out the R4 that was sitting on my shelf to test out Panzer Tactics DS, and miraculously it worked. However, when I tried to load more roms onto the card they would not work, whitescreening a second after loading. I have tried untrimmed and trimmed, both to no degree of success. Finally I got fed up and formatted the card, and now the damn thing wont even boot. It merely says loading and presents me with black screens. I thought it was my microsd, so I tried my spare 1gb kingston and it works with that one, but the 2gb kingston that I am having problems with works fine as an sd card so I do not know what the hell is going on =/. Any help? Thanks again... To clarify both of my cards are made in Japan