Error whilst checking for updates

[calvinps]

Hello all.

I was checking for updates, then I got this error box with the following message:

W: GPG error: http://ppa.launchpad.net jaunty Release: The following signatures could not be verified because the public key is not available: NO_PUBKEY CE90D8983E731F79

There's two things I need to know:

1. The seriousness of the error in terms of security
2. How I would be able to fix it

Thanks in advance if you have any solutions

[calvinps]

bump

[calvinps]

bump again

[almikul]

1. Find the GPG key at this address: http://keyserver.ubuntu.com:11371/pk...90D8983E731F79
2. Next, copy the text that starts with "-----BEGIN PGP PUBLIC KEY BLOCK-----" and ends with "-----END PGP PUBLIC KEY BLOCK-----" and save it as a text file.
3. Then, go to System->Administration->Software Sources and open tab Authentication.
4. Click on Import Key File and select the file you've just saved.
5. Then do 'sudo apt-get update' in terminal (or use GUI) and it should not give you any warnings.

Hope it helps.

[PatrikG]

Had the exact same problems and followed the steps above, and no problems anymore.

Thanks!

[calvinps]

Bump! Another (similar) error just appeared :/

GPG error: http://download.virtualbox.org jaunty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY DCF9F87B6DFBCBAEGPG error: http://download.virtualbox.org intrepid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY DCF9F87B6DFBCBAEFailed to fetch cdrom://Ubuntu 8.10 _Intrepid Ibex_ - Release i386 (20081029.5)/dists/intrepid/main/binary-i386/Packages  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Failed to fetch cdrom://Ubuntu 8.10 _Intrepid Ibex_ - Release i386 (20081029.5)/dists/intrepid/restricted/binary-i386/Packages  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Some index files failed to download, they have been ignored, or old ones used instead.

[calvinps]

Hello?! I have another problem here!

[calvinps]

bump

[ushills]

go to the virtual box site and download their gpg key they guide you on the site.

[abhiroopb]

you can use the following command:

sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com CE90D8983E731F79

You can use this command whenever you add a new repository. This basically authenticaes the repository.

Let me know if it works.