“Smells like Facebook” – problems with comments

Hello!
This is a great theme. But we have a problem with the comments – it’s not possible to expand the comments in order to read the comments in entity. Moreover, the gravatar works in posts, but not in comments. Whats wrong? We have WordPress 2.8.2 and “Smells like Facebook” 2.3. Check our web page http://www.finrosforum.fi and look at some posts on first page which have comments.