apt-cache policy libsasl2
libsasl2:
  Installed: 2.1.19.dfsg1-0.5
  Candidate: 2.1.19.dfsg1-0.5
  Version Table:
 *** 2.1.19.dfsg1-0.5 0
        100 /var/lib/dpkg/status
     2.1.19.dfsg1-0sarge2 0
        500 http://gulus.usherbrooke.ca stable/main Packages
        500 http://debian.yorku.ca stable/main Packages
     2.1.19-1.5sarge1 0
        500 http://security.debian.org stable/updates/main Packages
        500 http://security.debian.org sarge/updates/main Packages
     2.1.19-1.5 0
        500 cdrom://[Debian GNU/Linux 3.1 r2 _Sarge_ - Official i386 Binary-1 (20060419)] unstable/main Packages