MyBookLive:~# apt-cache policy
Package files:
 100 /var/lib/dpkg/status
     release a=now
 500 http://ftp.us.debian.org wheezy/main Packages
     release v=7.3,o=Debian,a=stable,l=Debian,c=main
     origin ftp.us.debian.org
 500 http://ftp.us.debian.org squeeze/main Packages
     release v=6.0.8,o=Debian,a=oldstable,l=Debian,c=main
     origin ftp.us.debian.org
Pinned packages: