Errors

use_warnings

Net::Curl

valid_signature

Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Mon 16 May 2011 05:11:13 AM JST
gpg:                using DSA key 765B4473C6A2C9B9
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==