Hallo Drake, I've checked with FTP Masters on #debian-ftp and appearantly the GPG signature was wrong. For example:
Dec 19 09:55:39 GnuPG signature check failed on empire- hub_1.0.2.2_amd64.changes Dec 19 09:55:39 (Exit status 2) Dec 19 09:55:39 /empire-hub_1.0.2.2_amd64.changes has bad PGP/GnuPG signature! Maybe check if you used the right key? -- tobi
