People were getting 404 errors on charts for charity when trying to comment. The comments were coming through just fine, but they would be redirected to the 404 page after the comment went through. Turns out, there is a bug in the bloxy-two theme causing it. First, I upgraded to WordPress 3.0 thinking that might fix it, but when that failed, a little googling solved the problem for me. I should have known that with the active community at wordpress.org someone would have run into it before me. If you stumble upon the same and end up here, continue on to the source of the fix.