=== modified file 'includes/session.inc'
--- includes/session.inc	2009-07-02 00:41:56 +0000
+++ includes/session.inc	2010-04-17 21:02:22 +0000
@@ -70,7 +70,7 @@
     // Last access time is updated no more frequently than once every 180 seconds.
     // This reduces contention in the users table.
     if ($user->uid && time() - $user->access > variable_get('session_write_interval', 180)) {
-      db_query("UPDATE {users} SET access = %d WHERE uid = %d", time(), $user->uid);
+      db_query("UPDATE {users_access} SET access = %d WHERE uid = %d", time(), $user->uid);
     }
   }
   else {