User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-71.191.132.250-20111206212557/@comment-4563270-20111206225220

it might have something to do with those hackers some years back who got a hold of blank DS cards, made by some european company for gamers who wanted to right and make their own games for the DS, and started using THOSE very cards to pirate existing DS titles. It was a big thing. Nintendo actually sued the two guys and the makers of the blank DS cards and won.