The error NO_PUBKEY 5C808C2B65558117 relates to the Debian multimedia repository public key.
New year (2015) and an error on the Debian multimedia keyring:
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://deb-multimedia.org testing InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5C808C2B65558117 W: Failed to fetch http://deb-multimedia.org/dists/testing/InRelease W: Some index files failed to download. They have been ignored, or old ones used instead.
To resolve the NO_PUBKEY 07DC563D1F41B907 error perform the following steps:
- apt-get install deb-multimedia-keyring
- apt-get update
The Debian multimedia repository website notes that the new key was added on 14th January 2015.
