well i noticed that the DS is really screwy when it has a GBA game loaded, and if you remove the cart it will even crash at the main interface, so you cant reallyload a Game in first then swap for an older one anyway. thats the only reason i even took it apart to see if i could quick swap em...
so what else could i use the thing for? no GBA to PC links? i mean its 3 sllots hooked to one cart, think man!