Magento: Product Review Form is not submitting.

While I submit the Product Review form in magneto but it is not submitting and not showing any error message.

Then I checked the Review form. I found some error in code. 

<?php echo $this->getBlockHtml('formkey'); ?>

was not writting.  So I added this code in "form.phml" of Review after form tag.

Now code looks like :

 <?php if ($this->getAllowWriteReviewFlag()): ?>

    <form action="<?php echo $this->getAction() ?>" method="post" id="review-form">

<?php echo $this->getBlockHtml('formkey'); ?>


        <fieldset>