Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free.

This is what I get when trying to upgrade 10.10 Server to Natty.

$ do-release-upgrade 
Checking for a new ubuntu release

Get:1 Upgrade tool signature [198B]                                                                                                       
Get:2 Upgrade tool [182B]                                                                                                                 
Fetched 380B in 0s (0B/s)                                                                                                                 
authenticate 'natty.tar.gz' against 'natty.tar.gz.gpg' 
exception from gpg: GnuPG exited non-zero, with code 1
Debug information: 

gpg: Signature made Thu 20 Oct 2011 10:58:12 BST using DSA key ID 437D05B5
gpg: /tmp/update-manager-bkM3OS/trustdb.gpg: trustdb created
gpg: BAD signature from "Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>"

Authentication failed
Authenticating the upgrade failed. There may be a problem with the network or with the server. 

I am using apt-cache proxy defined in /etc/apt/apt.conf.d/90-apt-proxy.conf

apt-get update/upgrade is working normally (using proxy apt proxy)

Server doesn't have direct Internet connection.

No X installed.

# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 10.10
Release:    10.10
Codename:   maverick

# uname -a
Linux Host1 2.6.35-30-server #56-Ubuntu SMP Mon Jul 11 21:37:42 UTC 2011 x86_64 GNU/Linux

Any help will be appreciated.

share|improve this question

closed as too localized by Jorge Castro, Eric Carvalho, Eliah Kagan, hhlp, gertvdijk Feb 1 '13 at 19:56

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. If this question can be reworded to fit the rules in the help center, please edit the question.

This question appears to be abandoned and unanswered, if you are experiencing a similar issue please ask a new question with details pertaining to your problem. If you feel this question is not abandoned, please flag the question explaining that. –  Aditya Jan 31 '13 at 15:04