Signature on article is BAD in GnuPG and Good in PGP

[ls+gnupg.devel.gnupg.org at gambit.com.ru]

> ls+gnupg.devel.gnupg.org at gambit.com.ru wrote:
>> I just found an article news:1992Dec20.102732.11494 at extropia.wimsey.bc.ca
>> which has "BAD signature" in GnuPG 1.2.3 and "Good signature" in PGP 6.5.8.

Adrian von Bidder wrote:
> The included news article had a good signature by key 0x37E8E343 - but your
> email (signed by 0xF7D43E93CF017E57) as a whole was reported BAD by kmail.

shell> md5 article
MD5 (article) = 049763a539878b58e286fe6d2dd16f71

shell> gpg --fingerprint 37E8E343
pub  1022R/37E8E343 1992-09-10 Immortal Freedom <miron at extropia.wimsey.com>
     Key fingerprint = 6E BC EB E2 4F 50 95 5D  3F D3 9F 0D C7 2B E6 F6

shell> gpg -o /dev/null -v < article
gpg: armor header: Version: 2.1
gpg: original file name=''
gpg: Signature made Sun Dec 20 10:26:50 1992 GMT using RSA key ID 37E8E343
gpg: BAD signature from "[uncertain] Immortal Freedom <miron at extropia.wimsey.com>"
gpg: textmode signature, digest algorithm MD5

shell> gpg --version
gpg (GnuPG) 1.2.3
Copyright (C) 2003 Free Software Foundation, Inc.
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions. See the file COPYING for details.

Home: ~/.gnupg
Supported algorithms:
Pubkey: RSA, RSA-E, RSA-S, ELG-E, DSA, ELG
Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH
Hash: MD5, SHA1, RIPEMD160, SHA256
Compression: Uncompressed, ZIP, ZLIB
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