--- authcache.admin.inc	Sat Mar 03 18:09:44 2012
+++ authcache.admin.inc	Thu Mar 08 16:06:32 2012
@@ -170,11 +170,11 @@
   if ($form_state['values']['clear_sessions']) {
     // TODO Please review the conversion of this statement to the D7 database API syntax.
     /* db_query("DELETE FROM {sessions} WHERE sid <> '%s'", session_id()) */
-    db_delete('sessions')
+    $num_deleted = db_delete('sessions')
       ->condition('sid', session_id(), '<>')
       ->execute();
     // Set cookie for current user
-    authcache_user('login', $edit = NULL, $user);
-    drupal_set_message(t('%num user sessions have been invalidated.', array('%num' => db_affected_rows())));
+    authcache_user_login($edit = NULL, $user);
+    drupal_set_message(t('%num user sessions have been invalidated.', array('%num' => $num_deleted)));
   }