5
Alright, when I went to your test server I noticed that you did not have any topic images. So I went back to my site, deleted my topics, and recreated them without any images. Viola! Worked perfectly!
Next I added in images to the existing topics. Viola! No problems again. I might be crazy, but I'm wondering if it has something to do with the images. Before I was using a unique image for each topic I created. Now that I've dropped the images, it works fine. Adding the images in after the fact seems to be okay as well.
Weird, huh?