I have been trying to upgrade to 14.04 for several days now, but every time I get this error message:
W:Failed to fetch gzip:/var/lib/apt/lists/partial/security.ubuntu.com_ubuntu_dists_trusty-security_universe_i18n_Translation-en
Encountered a section with no Package: header, E:Some index files failed to download. They have been ignored, or old ones used instead.
sudo apt-get update
– sbergeron Aug 18 '14 at 16:20