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 Sun 21 Aug 2011 04:41:31 AM JST
gpg:                using DSA key 9EF74C963164F615
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==