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 Sat 29 Jun 2013 05:17:38 AM JST
gpg:                using DSA key 7867D53C747935DD
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==