Just to let you know, Chris: You're GPG signature was broken on that mail.

gpg: Signature made Thu 10 Mar 2005 10:35:54 PM PST using DSA key ID 5A0080DE
gpg: BAD signature from "Chris White (Sound | Video | Security Developer)
<chriswhite@gentoo.org>"

Something wrong with EnigMail perhaps? I had troubles with it and GnuPG 1.4.0
until I upgraded the EnigMail extension to 0.90.1.0 from enigmail.mozdev.org.
(I use the mozilla-thunderbird-bin package.)

--
()  The ASCII Ribbon Campaign - against HTML Email,
/\  vCards, and proprietary formats.
---------------------------------------------------
Peter A. Gordon (codergeek42)
E-Mail: admin@ramshacklestudios.com
GPG Public Key ID: 0x109DBECE
GPG Key Fingerprint (SHA1):
   E485 E2F7 11CE F9B2 E3D9 C95D 208F B732 109D BECE
Encrypted and/or Signed correspondence preffered.
GPG Public Key available upon request or from
   pgp.mit.edu's public key server.
---------------------------------------------------