relace this:
<?php comments_popup_link('No Comments', '1 Comment', '% Comments') ?>

with this:
<?php 
if ( !isset($comment_count_cache[$id])) {
    $comment_count_cache[$id] = 
      $wpdb->get_var("SELECT COUNT(comment_ID) FROM $wpdb->comments WHERE comment_post_ID = $id AND comment_approved = '1';");
}
$number = $comment_count_cache[$id];
if (($number != 0) || !('closed' == $post->comment_status)) {
    comments_popup_link('No Comments', '1 Comment', '% Comments',
                        'comments-link','');
}
?>