I want to allow comments for registered users only. But this wont work.
Comment field is showing, you can enter text, etc. but when it comes to send the comment, the button wont react to any clicking. What could be wrong here?

Try if you want, registration is of course free!

kanoon-music.com/index.php/magazin/aktuelles/item/178-hotlist-beruehmte-songs-aus-ungeahnter-feder

(german site, i posted to the german forum aswell, but this needs to be solved quickly)

thank you very much in advance!