Also after cache cleaned I can not publish

I have two questions. Also after I cleaned the cache I can not post a comment.

What else can it be?

I assume I can still use the cache function of Joomla when using komento?

And I see two times the displayed counter and the comment counter on the intro articles in the article list.

What can this be?

And one last question. Is it possible to hide the big field with the message that no comment is posted yet when there is nothing posted? I prefer to see the please leave a message part instead of the pretty big part with the message that nothing is posted yet.

thanks.