Index: node.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/node/node.module,v
retrieving revision 1.783
diff -F^f -u -r1.783 node.module
--- node.module	15 Feb 2007 11:40:18 -0000	1.783
+++ node.module	26 Feb 2007 03:53:32 -0000
@@ -103,7 +103,7 @@ function node_last_viewed($nid) {
   static $history;
 
   if (!isset($history[$nid])) {
-    $history[$nid] = db_fetch_object(db_query("SELECT timestamp FROM {history} WHERE uid = '$user->uid' AND nid = %d", $nid));
+    $history[$nid] = db_fetch_object(db_query("SELECT timestamp FROM {history} WHERE uid = %d AND nid = %d", $user->uid, $nid));
   }
 
   return (isset($history[$nid]->timestamp) ? $history[$nid]->timestamp : 0);