From b0f5b628cc6a726e3e497e5ccbc0a4900ecb8aad Mon Sep 17 00:00:00 2001
From: Ryan Boren <ryan@git.wordpress.org>
Date: Thu, 5 Jan 2012 22:46:32 +0000
Subject: [PATCH] Don't fire update checks for ajax requests. Props
 mitchoyoshitaka. fixes #13732

git-svn-id: https://develop.svn.wordpress.org/trunk@19693 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/update.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wp-includes/update.php b/wp-includes/update.php
index 8d563e9e51..4a6278528f 100644
--- a/wp-includes/update.php
+++ b/wp-includes/update.php
@@ -431,7 +431,7 @@ function wp_schedule_update_checks() {
 		wp_schedule_event(time(), 'twicedaily', 'wp_update_themes');
 }
 
-if ( ! is_main_site() && ! is_network_admin() )
+if ( ( ! is_main_site() && ! is_network_admin() ) || ( defined( 'DOING_AJAX' ) && DOING_AJAX ) )
 	return;
 
 add_action( 'admin_init', '_maybe_update_core' );