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 Thu 07 Aug 2008 12:37:14 PM JST
gpg:                using DSA key B317D0B4787244FA
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==