Ubuntu
update-manager package

  1. Bug #215694
  2. Comment #6

Comment 6 for bug 215694

Revision history for this message
GeekSmith (lixo-geeksmith) wrote :

This was an issue for me, too. If you're using a proxy, like apt-cacher-ng, you can't download the gpg files and the upgrade fails early. See this thread:
http://ubuntuforums.org/showthread.php?t=436018

Easy to reproduce.