Errors

use_warnings

Math::BigFloat::Trace, Math::BigInt::Trace, bigint, bignum, bigrat

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 08 Aug 2011 11:38:49 PM JST
gpg:                using DSA key 742F2A428E635A5E
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==