~$ apt-cache policy
Package files:
 100 /var/lib/dpkg/status
     release a=now
 500 ftp://debian.mirrors.tds.net stable/main Packages
     release v=3.1r3,o=Debian,a=stable,l=Debian,c=main
     origin debian.mirrors.tds.net
 500 ftp://mirrors.geeks.org stable/main Packages
     release v=3.1r3,o=Debian,a=stable,l=Debian,c=main
     origin mirrors.geeks.org
 500 http://www.debian-multimedia.org sarge/main Packages
     release o=Unofficial Multimedia Packages,a=stable,l=Unofficial Multimedia Packages,c=main
     origin www.debian-multimedia.org
 500 http://debian-multimedia.org sarge/main Packages
     release o=Unofficial Multimedia Packages,a=stable,l=Unofficial Multimedia Packages,c=main
     origin debian-multimedia.org
 500 http://security.debian.org stable/updates/main Packages
     release v=3.1,o=Debian,a=stable,l=Debian-Security,c=main
     origin security.debian.org
 500 ftp://mirror.cs.wisc.edu stable/main Packages
     release v=3.1r3,o=Debian,a=stable,l=Debian,c=main
     origin mirror.cs.wisc.edu
Pinned packages:
     mutt -> (not found)