I have an Acekard 2i which I bought a few months ago, and I love it! This doesn't happen when I use it on my DS lite, and only on my DSi. Instead of going into sleep mode on most games, the power just shuts off when I close the DS. This first happened every so often in Mario and Luigi RPG 3 a few months ago. It hasn't happened for a while since then, but now it started happening in every game every time I close it. It doesn't happen in homebrew programs, though. Has this happened to anyone else? Is there any way to fix this?