Comments dosen’t work anymore…

I just found out that comments on my site ( http://truemoneymaker.net ) dosen’t work anymore, i have searched the forum but haven’t found anything that helps… 🙁

The settings in the “Discussion” option is correct.

When i try to add a comment nothing happen, it just reload the page (this time withour the text i wrote), and no comment is to find.

! The problem is only when i am not logged in, but my settings says that everyone can add a comment !

And when i try to add the same comment to times (not logged in) i get a message that i seams like i already have postet the same comment. But the comment is not there.

I have tried in many different browsers, same problem.

I use the theme Ocean Mist, but i have the same problem with every other themes.

The comments worked find before i changed the design.

I have tried to overwrite the current comments.php with the one that originaly came with the design, but it didn’t help 🙁

Do anyone know whats wrong? How do i fix this?