Upgrade error

[fabiocunha]

I'm trying to upgrade and this appears:

: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.canonical.com maverick Release: The following signatures were invalid: NODATA 2

W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://gb.archive.ubuntu.com lucid Release: The following signatures were invalid: NODATA 2

W: GPG error: http://archive.ubuntu.com maverick Release: The following signatures were invalid: NODATA 2
W: GPG error: http://archive.ubuntu.com maverick-updates Release: The following signatures were invalid: NODATA 2
W: GPG error: http://archive.ubuntu.com maverick-security Release: The following signatures were invalid: NODATA 2
W: GPG error: http://archive.ubuntu.com maverick-proposed Release: The following signatures were invalid: NODATA 2
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/maverick-backports/Release.gpg Error reading from server - read (104: Connection reset by peer) [IP: 91.189.92.171 80]

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/maverick/Release

W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/lucid/Release

W: Some index files failed to download, they have been ignored, or old ones used instead.


Anyone have any ideas?

[mörgæs]

You could try opening Software Sources and select another server.