If you are looking for other anti-spam solutions for WordPress, look here.
I use a combination of Spam Karm and Moderate Trackback/Moderate Pingback (http://mtdewvirus.com/archives/2005/01/06/wordpress-plugins-trackback-and-pingback-moderation/) and not one spam has gotten through yet….
Yeah, all of my trackback spam is being caught thanks to my overly aggressive blacklist. I was hoping that Spam Karma would just delete the trackback spam for me, but oh well. Back to basics.
So far (knock on wood) SK has caught and deleted all of my trackback garbage.
Although I just noticed that I’m running 1.5 to your 1.222, so maybe that is why?
In any case, SK has caught 100% of my garbage, be it comments or trackback.
Just my experience….
Yeah, it’s a conflict with how trackbacks are handled in v1.2.x.