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 Wed 06 Sep 2006 07:23:30 AM JST
gpg:                using DSA key 122F5DF7108E4046
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==