GnuPG signature check failed on approx_4.1-1~bpo50+1_i386.changes gpg: Signature made Wed Sep 9 03:13:48 2009 CEST using DSA key ID B882EBD7 gpg: Can't check signature: public key not found (Exit status 2) approx_4.1-1~bpo50+1_i386.changes has bad PGP/GnuPG signature! Removing approx_4.1-1~bpo50+1_i386.changes, but keeping its associated files for now. Greetings, Your Debian queue daemon