... but I modified the comment filtering code I have in place (which is working fairly well ... or at least well enough for now) to also filter trackback pings.
Hopefully it will be enough.
Update: Fixed a typo that prevented this from working. It seems to be working now, though.
Sweet.
Let me know if you continue to have lots of issues.
I can change things around so we can run MT-Blacklist or work on some other possible solutions (bayesian filtering, running through spamassassin, something else) if necessary.
Roger roger.