There’s some sort of problem with PHP5 on my server. Spam Karma 2 (among a few other things) triggers the bug. You, as a user, will notice it when you go to post a comment (as it gets ran through Spam Karma 2). The end result is that you get a page with some esoteric error stating faultCode0faultStringFatal error:Cannot access empty property, etc.
Never fear! Your comment will be posted, and all you have to do is hit the back button, then reload. It’s an issue we (myself, the admin of the box, and a couple others being hosted here) are looking into.
In the mean time, sorry ’bout that.