Paul van der Vlis dijo [Wed, Apr 01, 2015 at 12:12:25PM +0200]: > > No they aren't. The source that CentOS uses is modified to remove > > references to Red Hat. > > Debian has to change the source of Firefox and Thunderbird too. > Does that make it nonfree software? I don't think so. Remember we don't ship Firefox or Thunderbird — We ship Iceweasel and Icedove. Precisely for that reason.