an article from a UK games news site make of it what you will:

Internet piracy groups have now managed to 'crack' Nintendo DS, with games now freely available for download on the web.

Numerous games, such as Nintendogs and Super Mario 64 DS have now been illegally leaked on to the internet, with players able to download and play them via specially designed flash memory cards (pictured on the right).

These flash cards come in two sizes, 512MB and 1GB and are fully rewriteable, giving gamers the ability to swap downloaded games around as they see fit.

This follows persistent ongoing efforts to fully crack Sony's PSP handheld, where numerous games and a UMD dumping utility (enabling users to copy UMD data to memory) have already been released on to the web, with sources claiming software to play the files from memory stick is just days away.