Kazaa Media Desktop is the leading piece of file-trading software of the moment, and as such, it is at the center of the firestorm over illegal copying and swapping of copyrighted songs and movies. But Kazaa’s legal troubles apparently don’t end with the long list of industry heavies and political bigwigs who want to shut it down: now, a Romanian man is claiming that he wrote the source code for Kazaa, and is suing the company for his share of the profits.