Update manager GPG error

[subseashaun]

Hi Dudes.

Just tried to update 7.10 using update manager, and had 41 updates to install however prior to it finishing the check it came up with this error message:

W: GPG error: http://archive.ubuntu.com gutsy-updates Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>

What does this mean and how do I get around it?

Thanks in advance for all replies.

Later

[linuxbastard]

getting this same issue with upgrade manager and #sudo apt-get update on hardy.


W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used.GPG error: http://security.ubuntu.com hardy-security Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/hardy-security/Release

W: Some index files failed to download, they have been ignored, or old ones used instead.
W: You may want to run apt-get update to correct these problems


One other post here says to try to remove the problematic repository, but I don't think that was intended for people having problems with the ubuntu security repository.