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 26 Apr 2012 09:15:44 AM JST
gpg:                using DSA key 20DF5E33A91F8EBA
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==