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 25 May 2008 10:18:14 AM JST
gpg:                using DSA key 37DAA2DBCC01905D
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==