Z:gnu-www-ja-common-distros--8b5efe-We're often asked why we don't/en

We're often asked why we don't endorse a particular system&mdash;usually a popular GNU/Linux distribution. The short answer to that question is that they don't follow the free system distribution guidelines. But since it isn't always obvious how a particular system fails to follow the guidelines, this list gives more information about the problems of certain well-known nonfree system distros.