Update Manager Error

[Apocalypso]

Hi guys. Hope you can help me with this. On Mint 9 when running Update Manager, I receive the following error message. Any clues?

W: GPG error: http://deb.opera.com stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A201***********
(* = I removed the letters in case it's something I shouldn't be posting)

When I click OK the downloads install normally.

[tdockery97]

It's not a harmful error. When you install Opera, it automatically adds the update repository to your sources list. But it doesn't give you the key. Without installing the key, you will always get this error, but it does no harm. If you don't want to see this error every time you refresh your package list, just edit your /etc/apt/sources.list (as root) and place a # at the beginning of the Opera repo entry (deb http://etc., opera, etc.).

[Apocalypso]

Thanks