W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://extras.ubuntu.com maverick Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY DB141E2302FDF932

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

How do I enable a public key?

open up a konsole and try:

Code: Select all

gpg --keyserver keyserver.ubuntu.com --recv DB141E2302FDF932
gpg --export --armor DB141E2302FDF932 | sudo apt-key add -
sudo apt-get update

that should fix the key error for you.