Errors

valid_signature
Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Tue 04 May 2010 09:01:43 PM JST
gpg:                using DSA key 12A717849FB3EFB6
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==