apt-cache policy compiz
compiz:
  Installé : 0.0.13.48-0ubuntu1
  Candidat : 0.0.13.48-0ubuntu1
 Table de version :
 *** 0.0.13.48-0ubuntu1 0
        500 http://www.beerorkid.com edgy/main-edgy Packages
        100 /var/lib/dpkg/status
     0.0.13.38-0ubuntu3 0
        500 http://us.archive.ubuntu.com edgy/universe Packages