Not only do you have to find an excellent translator, one who works well in both languages and is a stylist to boot (or who can work in tandem with someone else, like the excellent Richard Pevear and Larissa Volokhonsky do in Russian), but the copy editing and proof reading take on a new layer of work.
And while Durkee knows he took a risk with an unproven technology, he thinks his success has served as aproof of concept for established companies that are reluctant to takea chance with Linux on their mission-critical systems.