user@desktop:~$ apt-cache policy compiz
compiz:
  Installed: 1:0.5.2-0ubuntu3~ppa4
  Candidate: 1:0.5.2-0ubuntu3~ppa4
  Version table:
 *** 1:0.5.2-0ubuntu3~ppa4 0
        500 http://ppa.dogfood.launchpad.net feisty/main Packages
        100 /var/lib/dpkg/status
     1:0.3.6-1ubuntu13 0
        500 http://au.archive.ubuntu.com feisty/main Packages

user@desktop:~$ apt-cache policy compiz-core
compiz-core:
  Installed: 1:0.5.2-0ubuntu3~ppa4
  Candidate: 1:0.5.2-0ubuntu3~ppa4
  Version table:
     1:0.5.2-0ubuntu3~ppa4 0
        500 http://ppa.dogfood.launchpad.net feisty/main Packages
 *** 1:0.5.2-0ubuntu3~ppa4 0
        100 /var/lib/dpkg/status
     1:0.3.6-1ubuntu13 0
        500 http://au.archive.ubuntu.com feisty/main Packages