? boost-564990.patch
Index: boost.admin.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/boost/boost.admin.inc,v
retrieving revision 1.1.2.1.2.3.2.64
diff -u -p -r1.1.2.1.2.3.2.64 boost.admin.inc
--- boost.admin.inc	31 Aug 2009 08:59:33 -0000	1.1.2.1.2.3.2.64
+++ boost.admin.inc	1 Sep 2009 04:21:15 -0000
@@ -542,7 +542,7 @@ function boost_admin_boost_performance_p
   $total = boost_crawler_total_count();
   //variable_get
   $number_done = min($total, unserialize(db_result(db_query("SELECT value FROM {variable} WHERE name = 'boost_crawler_position'"))));
-  if (variable_get('boost_crawler_number_of_threads', 0) > 0) {
+  if (variable_get('boost_crawler_number_of_threads', 0) > 0 && $number_done > 0) {
     $form['crawler']['live'] = array(
       '#type'          => 'fieldset',
       '#title'         => t('Boost crawler - Live info'),