Index: apachesolr.admin.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/apachesolr/apachesolr.admin.inc,v
retrieving revision 1.1.2.28
diff -u -p -r1.1.2.28 apachesolr.admin.inc
--- apachesolr.admin.inc	2 Jul 2009 09:11:09 -0000	1.1.2.28
+++ apachesolr.admin.inc	3 Jul 2009 17:08:45 -0000
@@ -360,6 +360,7 @@ function apachesolr_delete_index_confirm
     // This form can't be seen by anyone without 'administer search'
     // permission, so no need to check perms before displaying a run-cron link.
     drupal_set_message(t('The Apache Solr content index has been erased. You must now !run_cron until your entire site has been re-indexed.', array('!run_cron' => l(t('run cron'), 'admin/reports/status/run-cron', array('query' => array('destination' => 'admin/settings/apachesolr/index'))))));
+
   }
   catch (Exception $e) {
     watchdog('Apache Solr', nl2br(check_plain($e->getMessage())), NULL, WATCHDOG_ERROR);
@@ -381,7 +382,9 @@ function apachesolr_delete_index() {
   drupal_alter('apachesolr_delete_index', $query);
   $solr->deleteByQuery($query);
   $solr->commit();
-  apachesolr_clear_last_index();
+  // Rebuild our node-tracking table.
+  module_load_include('install', 'apachesolr');
+  apachesolr_enable();
   apachesolr_index_updated(time());
 }
 
Index: apachesolr.install
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/apachesolr/apachesolr.install,v
retrieving revision 1.1.4.18
diff -u -p -r1.1.4.18 apachesolr.install
--- apachesolr.install	30 Jun 2009 10:57:24 -0000	1.1.4.18
+++ apachesolr.install	3 Jul 2009 17:08:45 -0000
@@ -24,7 +24,7 @@ function apachesolr_install() {
  */
 function apachesolr_enable() {
   // Make sure we don't have stale data.
-  variable_del('apachesolr_index_last');
+  apachesolr_clear_last_index();
   db_query("DELETE FROM {apachesolr_search_node}");
   // Populate table
   db_query("INSERT INTO {apachesolr_search_node} (nid, status, changed)