I just tried out my rumble pack today, but whenever I insert it, it just rumbles like crazy...or rather, buzzes, it doesn't really move much. Is this normal? Isn't there some kind of setting to make it work like it should, so that it rumbles only during a game when the circumstances are met? It really scared me the first time, I first tried out my GBA expansion, then put in the rumble and accidentally clicked on a GBA game - it immediately began buzzing and because it sounded a lot like if the internal drive was spinning really fast or just overheating or something, I switched it off. Whew, that scared me. So I tried taking it out, starting a NDS rumble compatible game (Metroid Prime Hunters) and it was buzzing again. I tried it with Pokemon Dash too, but to no avail, it just buzzes all the time...(but I never actually had the nerve to start playing the game with it, I only switched the game on, inserted it, and when it was still buzzing while the intro screens were going by, I just gave up on it and took it out).