I have recently returned to using Ubuntu and want to get it as shipshape as possible...the update manager finds problems whenever it tries to update, and when I run the command in the terminal i get this-
W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://deb.opera.com stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E585066A30C18A2B
W: Failed to fetch http://deb.opera.com/opera/dists/stable/Release
W: Some index files failed to download. They have been ignored, or old ones used instead.
Should I be updating? upgrading? or installing a new ubuntu? I'd rather not have to wipe the current ubuntu off then start afresh///
Where the Stoners live...