Comment 7 for bug 129392

Same for me .I`ve full updated Feisty and i`m not behind proxy. Let me know if more info is needed

mario@server:~$ apt-cache policy update-manager
update-manager:
  Installed: 1:0.59.23
  Candidate: 1:0.59.23
  Version table:
 *** 1:0.59.23 0
        500 http://sk.archive.ubuntu.com feisty-updates/main Packages
        100 /var/lib/dpkg/status
     1:0.59.20 0
        500 http://sk.archive.ubuntu.com feisty/main Packages