I saw the same behavior in UBuntu 12.04 as well where net-retriever is stuck of 10+ minutes. I am attaching the installer logs on moonshot cartridges from MAAS which will give you no reason to be there. It will be great if someone can work on it and will help rectifying the issue.
** Attachment added: "installlog" https://bugs.launchpad.net/ubuntu/+source/net-retriever/+bug/1067934/+attachment/3709685/+files/installlog -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1067934 Title: spends 10+ minutes deduplicating Package lists To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/net-retriever/+bug/1067934/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs