Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.491
diff -u -F^f -r1.491 common.inc
--- includes/common.inc	28 Oct 2005 01:06:36 -0000	1.491
+++ includes/common.inc	23 Nov 2005 05:49:19 -0000
@@ -783,6 +783,7 @@ function format_rss_item($title, $link, 
   $output = "<item>\n";
   $output .= ' <title>'. check_plain($title) ."</title>\n";
   $output .= ' <link>'. check_url($link) ."</link>\n";
+  $output .= ' <guid isPermaLink="true">'. check_url($link) ."</guid>\n";
   $output .= ' <description>'. check_plain($description) ."</description>\n";
   foreach ($args as $key => $value) {
     if (is_array($value)) {