public key is not available

W: GPG error: http://packages.medibuntu.org maverick Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2EBC26B60C5A2783



You have to run in terminal this command:

wget -q http://medibuntu.sos-sts.com/repo/medibuntu-key.gpg -O- | sudo apt-key add -