And my Monster Hunter 4 savegame was rolled back to 2 weeks ago. I have no idea whether it was the Gateway microSD or the 3DS SD card malfunctioning. I'm on EmuNAND 7.1 with the Gateway 2.2. Was playing Monster Hunter 4 halfway and it locked up, can't press home, closing the 3DS does nothing. Had to hold the Power Button until it powered off, went back ingame and noticed the rolled back savegame. So just remember to backup your saves, I know I'll do that weekly from now on.