Buddy Press Bug

Hi,
I’m using this theme with Buddy Press and a long comment thread from one of my blog posts is appearing on each Buddy Press page. E.g. Register, Members, etc. Here’s and example.

I tried disabling comments on the pages within the editor, but that doesn’t do anything.

I’ve tried this CSS:
body.registration #commentpost { display:none !important; }

and this PHP:

add_filter('tc_show_comments', 'disable_comments_buddypress_pages');
function disable_comments_buddypress_pages( $bool ){
  if ( is_page() && is_buddypress() )
    return false;
  return $bool;
}

but the comments still appear. Any idea what the problem may be?