GnuPG signature check failed on bird_1.0.12-1~bpo40+1_amd64.changes gpg: Signature made Thu Nov 13 10:10:20 2008 UTC using DSA key ID C20DF273 gpg: Can't check signature: public key not found (Exit status 2) bird_1.0.12-1~bpo40+1_amd64.changes has bad PGP/GnuPG signature! Removing bird_1.0.12-1~bpo40+1_amd64.changes, but keeping its associated files for now. Greetings, Your Debian queue daemon