I just upgraded to the newest WP, I’ve also chosen to not continue the use of the image authentication problem because a significant amount of spam was still coming through. If you have any problems with this new version, please let me know.
Update: This blog now uses an anti-spam program called Bad Behavior. It is aggressively anti-spam and therefore may result in some false positives. We advise you to read about What to do when Bad Behavior blocks you (or your friends) before posting. If you believe that this has happened to your comment (rather than it being rejected for moderation), please contact tekanji using the link on the sidebar.