From 7b043de0172ebb099668a154b35d2bd575cfe544 Mon Sep 17 00:00:00 2001
From: Ron Rennick <wpmuguru@git.wordpress.org>
Date: Sun, 28 Feb 2010 19:34:57 +0000
Subject: [PATCH] dont flush rewrite rules while in switch_to_blog, see #12383

git-svn-id: https://develop.svn.wordpress.org/trunk@13509 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-admin/ms-edit.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/wp-admin/ms-edit.php b/wp-admin/ms-edit.php
index 16342fd354..28a765ef11 100644
--- a/wp-admin/ms-edit.php
+++ b/wp-admin/ms-edit.php
@@ -218,7 +218,8 @@ switch ( $_GET['action'] ) {
 				update_option( 'home', $blog_address );
 		}
 
-		$wp_rewrite->flush_rules();
+		// rewrite rules can't be flushed during switch to blog
+		update_option( 'rewrite_rules', '' );
 
 		// update blogs table
 		$blog_data = stripslashes_deep($_POST[ 'blog' ]);