apt-cache policy krb5-user
krb5-user:
  Installed: (none)
  Candidate: 1.4.3-9ubuntu1
  Version table:
     1.4.3-9ubuntu1 0
        500 http://us.archive.ubuntu.com edgy/universe Packages
     1.4.3-5ubuntu0.2 0
        500 http://security.ubuntu.com dapper-security/universe Packages
     1.4.3-5 0
        500 http://us.archive.ubuntu.com dapper/universe Packages