Update Manager won't update! (Ubuntu 9.10)

[trixa_13]

When I clicked the option, "Check", an error message would pop-up. And it says:

W: GPG error: http://repository.glx-dock.org karmic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 1392A97E41317877
W: GPG error: http://packages.medibuntu.org karmic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2EBC26B60C5A2783

What should I do?

[Dantevus]

I'd remove the medibuntu repositories and try again. Looks like they are out of date.

[wojox]

Run this in the terminal:

gpg --keyserver subkeys.pgp.net --recv 1392A97E41317877

gpg --export --armor 1392A97E41317877 | sudo apt-key add -

Then repeat it for the other number.

[trixa_13]

Run this in the terminal:

gpg --keyserver subkeys.pgp.net --recv 1392A97E41317877

gpg --export --armor 1392A97E41317877 | sudo apt-key add -

Then repeat it for the other number.

Thank you very much!

[wojox]

Welcome