Index: ajax_comments.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/ajax_comments/ajax_comments.module,v
retrieving revision 1.1.2.29
diff -u -p -r1.1.2.29 ajax_comments.module
--- ajax_comments.module	21 Apr 2009 20:38:52 -0000	1.1.2.29
+++ ajax_comments.module	16 Jun 2009 11:24:04 -0000
@@ -20,6 +20,7 @@ function ajax_comments_form_alter(&$form
   if ($all_allowed || isset($allowed_node_types[$node->type]) && $allowed_node_types[$node->type]) {
     if (($form_id == 'comment_form') && (arg(1) != 'edit') && (arg(1) != 'reply') && (arg(2) != 'edit') && (arg(2) != 'reply')) {
       $form['#prefix'] = '<div id="comment-preview"></div>';
+      $form['#cache'] = TRUE;
 
       // Overriding PID param so it will appear on the form.
       $form['pid']['#type'] = 'hidden';