Comment 4 for bug 502641

Actually I can confrim again that apt behaves odd again:

$ apt-cache policy mediatomb
mediatomb:
  Installed: (none)
  Candidate: 0.12.0~svn2018-6ubuntu1
  Version table:
     0.12.0~svn2018-6ubuntu1 0
        600 http://de.archive.ubuntu.com lucid/universe Packages
     0.12.0~svn2018-6 0
         -1 http://ftp.de.debian.org testing/main Packages
         -1 http://ftp.de.debian.org unstable/main Packages
     0.12.0~svn2018-4ubuntu1 0
         50 http://de.archive.ubuntu.com karmic/universe Packages
     0.11.0-3 0
         -1 http://ftp.de.debian.org stable/main Packages

apt-get source mediatomb/stabe -> downlaods stable
apt-get source mediatomb/karmic -> downloads karmic
apt-get source mediatomb/unstable -> downloads lucid
apt-get source mediatomb/testing -> downloads lucid
apt-get source mediatomb/lucid -> downlaods lucid

And getting by version fails for me too