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 Mon 08 Feb 2010 06:16:04 PM JST
gpg:                using RSA key A462471A58F73449
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==