All of a sudden users (and myself) cannot type into the comment boxes in the custom theme here: http://blog.chicagoscholars.org
Here is a single post page with comments enabled - where not working: http://blog.chicagoscholars.org/2010/03/march-letter/
I have restored my comments.php and functions.php files from a point where I know comments were working. I had Disqus commments enabled when I noticed the problem, and I have removed that plugin - but the issue persists. If I restore the default theme comments work just fine.
What am I missing?