Debian Pakete die einer häufigen Erneuerung bedürfen (Spamfilter, Virusscanner) sollten außerhalb stable distribuiert werden
Compare of different tool to set up a Debian repository
The Penguin Liberation Front is a team that builds packages that are patent encumbered or proprietary. The PLF has been providing litigious packages for Mandriva for many years. Currently the team is doing the same thing for Ubuntu.