Redirect Loop – Multisite Network installaion with SubDomains

Hi all, this one is sending me spare… for no reason today i was working away on my sites, ready for launch in 24 hours and all of a sudden I started to get the redirect loop error, when i say working, I was not installing anything, I was not touching the admin, I was simply uploading content.

The ONLY thing I installed today was something called geo redirect – yes sounds like the culprit, but I only installed it on one of the sites site, set it to redirect people coming from china to the china site, then removed the setting as I wasn’t ready – so far I have changed the folder i plugins to old_…. I installed this about 5 hours before the redirect issue started happening, so I don’t think it’s related.

I have two sites, with the same host, dedicated, same box but different instances…

Both sites are running WP network in domain, with BP_Multisite

So

site1.com
subsite1.site1.com
subsite2.site1.com
etc

Sites are bouncing back and forth between www and none www in the URL then browsers says there is a redirect loop.

Sites are virtualsport.net and virtualsportchina.net

Host is saying ‘NOT US’ I argued someone had been playing with DNS.. noop, seems not they say!

.htaccess below:

RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# uploaded files
RewriteRule ^([_0-9a-zA-Z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [L]

# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule  ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
RewriteRule  ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]

#BEGIN s2Member GZIP exclusions
<IfModule mod_rewrite.c>
	RewriteEngine On
	RewriteBase /
	RewriteCond %{QUERY_STRING} (^|\?|&)s2member_file_download\=.+
	RewriteRule .* - [E=no-gzip:1]
</IfModule>
# END s2Member GZIP exclusions

wp-config below:

<?php define('WP_CACHE', true);

define ( 'MULTISITE', true );
define ( 'SUBDOMAIN_INSTALL', true );
$base = '/';
define ('DOMAIN_CURRENT_SITE', 'virtualsport.net');
define ( 'PATH_CURRENT_SITE', '/' );
define ( 'SITE_ID_CURRENT_SITE', 1 );
define ( 'BLOG_ID_CURRENT_SITE', 1 );

I’ve read lots of help docs on here about other peoples issues, none of the fixes have worked.

Gonna be a long night for me, need to fix this one … any help much appreciated.