mysql-server-5.5:
  Installed: 5.5.28-0ubuntu0.12.04.2
  Candidate: 5.5.28-0ubuntu0.12.04.3
  Version table:
     5.5.28-0ubuntu0.12.04.3 0
        500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages
 *** 5.5.28-0ubuntu0.12.04.2 0
        500 http://mirror.rackspace.com/ubuntu/ precise-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     5.5.22-0ubuntu1 0
        500 http://mirror.rackspace.com/ubuntu/ precise/main amd64 Packages
mysql-server-core-5.5:
  Installed: 5.5.28-0ubuntu0.12.04.3
  Candidate: 5.5.28-0ubuntu0.12.04.3
  Version table:
 *** 5.5.28-0ubuntu0.12.04.3 0
        500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages
        100 /var/lib/dpkg/status
     5.5.28-0ubuntu0.12.04.2 0
        500 http://mirror.rackspace.com/ubuntu/ precise-updates/main amd64 Packages
     5.5.22-0ubuntu1 0
        500 http://mirror.rackspace.com/ubuntu/ precise/main amd64 Packages