Index: wp-includes/admin-bar.php
===================================================================
--- wp-includes/admin-bar.php	(revision 18788)
+++ wp-includes/admin-bar.php	(working copy)
@@ -510,7 +510,7 @@
 	$icon .= "</div>";
 
 	if ( $awaiting_mod )
-		$title = sprintf( _n('%d Comment', '%d Comments', $awaiting_mod ), number_format_i18n( $awaiting_mod ) );
+		$title = sprintf( _n('%s Comment', '%s Comments', $awaiting_mod ), '<span id="ab-awaiting-mod" class="pending-count">' . number_format_i18n( $awaiting_mod ) . '</span>' );
 	else
 		$title = __('Comments');