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 20 Feb 2013 09:12:56 AM JST
gpg:                using RSA key 67BDC63E35D3FE1D
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==