The line <form action=”<?php echo get_settings(‘siteurl’); ?>/wp-comments-post.php” method=”post” id=”commentform”> is not compatible with FireFox. It should be <form action=”<?php echo get_settings(‘siteurl’); ?>/wp-comments-post.php” method=”post” id=”commentform” name=”commentform”>
We will note that in the installation instructions. We suggest that the WordPress scripters also correct that error in their code since they promote FireFox over IE.