Index: wp-includes/query.php
===================================================================
--- wp-includes/query.php	(revision 4384)
+++ wp-includes/query.php	(working copy)
@@ -693,6 +693,7 @@
 				$reqpage = 0;
 
 			if  ( ('page' == get_option('show_on_front') ) && ( $reqpage == get_option('page_for_posts') ) ) {
+				$this->is_singular = false;
 				$this->is_page = false;
 				$this->is_home = true;
 				$this->is_posts_page = true;
@@ -732,6 +733,7 @@
 		if (($q['page_id'] != '') && (intval($q['page_id']) != 0)) {
 			$q['page_id'] = intval($q['page_id']);
 			if  ( ('page' == get_option('show_on_front') ) && ( $q['page_id'] == get_option('page_for_posts') ) ) {
+				$this->is_singular = false;
 				$this->is_page = false;
 				$this->is_home = true;
 				$this->is_posts_page = true;