GnuPG signature check failed on apt-build_0.12.40_source.changes gpg: Signature made Tue Jan 31 21:53:55 2012 UTC using RSA key ID B2E4F4F3 gpg: Can't check signature: public key not found (Exit status 2) /apt-build_0.12.40_source.changes has bad PGP/GnuPG signature! Removing /apt-build_0.12.40_source.changes, but keeping its associated files for now. Greetings, Your Debian queue daemon (running on host franck.debian.org)