mutlsite + nginx - broken theme thumbnails

Hi,

I've got WP-Multisite installed using the sub-directory option. The only issue I am having is displaying theme thumbnails (and other images) inside of the site wordpress admin dashboard. I'll give you an example.

http://www.example.com/ maps to http:disappointed:hosting.com/example.

When I look at the theme thumbnails inside of the site the image will be broken but it'll reference the following link.

http://hosting.com/example/wp-content/themes/twentyeleven/screenshot.png

when the image is actually at:

http://hosting.com/wp-content/themes/twentyeleven/screenshot.png

I've pasted my nginx specific configuration below.

# WordPress multisite subdirectory rules.
# Designed to be included in any server {} block.

# This order might seem weird - this is attempted to match last if rules below fail.
location / {
        index index.php;
	try_files $uri $uri/ /index.php?$args;
	client_max_body_size 50m;
}

# Add trailing slash to */wp-admin requests.
rewrite /wp-admin$ $scheme://$host$uri/ permanent;

# Directives to send expires headers and turn off 404 error logging.
location ~* \.(js|css|png|jpg|jpeg|gif|ico)$ {
	expires 24h;
	log_not_found off;
}

# Pass uploaded files to wp-includes/ms-files.php.
rewrite /files/$ /index.php last;

# For multisite:  Use a caching plugin that creates symlinks to the correct subdirectory structure to get some performance gains.
set $cachetest "$document_root/wp-content/ms-filemap/${host}${uri}";
if ($uri ~ /$) {
	set $cachetest "";
}
if (-f $cachetest) {
	# Rewrites the URI and stops rewrite processing so it doesn't start over and attempt to pass it to the next rule.
	rewrite ^ /wp-content/ms-filemap/${host}${uri} break;
}

if ($uri !~ wp-content/plugins) {
	rewrite /files/(.+)$ /wp-includes/ms-files.php?file=$1 last;
}

# Uncomment one of the lines below for the appropriate caching plugin (if used).
#include /etc/nginx/includes/wordpress-ms-subdir-wp-super-cache.conf;
include /etc/nginx/includes/wordpress-ms-subdir-w3-total-cache.conf;

# Rewrite multisite '.../wp-.*' and '.../*.php'.
if (!-e $request_filename) {
	rewrite ^/[_0-9a-zA-Z-]+(/wp-.*) $1 last;
	rewrite ^/[_0-9a-zA-Z-]+.*(/wp-admin/.*\.php)$ $1 last;
	rewrite ^/[_0-9a-zA-Z-]+(/.*\.php)$ $1 last;
}

rewrite ^.*/files/(.*)$ /wp-includes/ms-files.php?file=$1 last;
if (!-e $request_filename) {
	rewrite  ^(.+)$  /index.php?q=$1  last;
}

# Pass all .php files onto a php-fpm/php-fcgi server.
location ~ \.php$ {
	# Zero-day exploit defense.
	# Won't work properly (404 error) if the file is not stored on this server, which is entirely possible with php-fpm/php-fcgi.
	# Comment the 'try_files' line out if you set up php-fpm/php-fcgi on another machine.  And then cross your fingers that you won't get hacked.
	try_files $uri =404;

	fastcgi_split_path_info ^(.+\.php)(/.+)$;
	#NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini

	include fastcgi_params;
	fastcgi_index index.php;
	fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
	# fastcgi_intercept_errors on;
	fastcgi_pass 127.0.0.1:9000;
}