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 18 Sep 2010 01:56:04 PM JST
gpg:                using DSA key 220302B15F2ABD12
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==