Index: facebook_comments.module
===================================================================
--- facebook_comments.module	(revision 159)
+++ facebook_comments.module	(working copy)
@@ -36,6 +36,7 @@
   $blocks = array();
   $blocks['facebook-comments'] = array(
     'info' => t('Facebook comments'),
+    'cache' => DRUPAL_NO_CACHE
   );
   return $blocks;
 }