phillw@piglet-vm:~$ apt-cache policy gir1.2-webkit-3.0
gir1.2-webkit-3.0:
  Installed: 1.10.0-0ubuntu1.1
  Candidate: 1.10.2-0ubuntu0.12.10.1
  Version table:
     1.10.2-0ubuntu0.12.10.1 0
        500 http://gb.archive.ubuntu.com/ubuntu/ quantal-proposed/main amd64 Packages
 *** 1.10.0-0ubuntu1.1 0
        500 http://gb.archive.ubuntu.com/ubuntu/ quantal-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     1.10.0-0ubuntu1 0
        500 http://gb.archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
phillw@piglet-vm:~$