My site doesn't get indexed for some reason

I use http://www.auditmypc.com/xml-sitemap.asp to check if it gets crawled or not.

http://www.domain.com/ does NOT get crawled http://www.domain.com/bg/ does NOT get crawled http://www.domain.com/bg/medical/ does unleash the huge crawling activity

also, it matters for some reason whether /bg/medical/ has www. If it doesn't, crawling doesn't work again.

.htaccess file:

RewriteEngine on
RewriteBase /
RewriteCond %{http_host} ^domain.com [NC]
RewriteRule ^(.*)$ http://www.domain.com/$1 [R=301,L] 

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^.*$ site/lib/router.php

router.php file relevant parts:

@list($uri,$queryString) = explode('?',$_SERVER['REQUEST_URI'],2);
$uri = trim($uri,'/');

$_GET = array();
parse_str($queryString,$_GET);

if (empty($uri)) {
header('Location: /bg/home');
die();
}
@list($first,$second,$third,$fourth) = explode('/', $uri开发者_如何学运维, 4);

///////////// VARIETY OF SWITCHES HERE with stuff like that:
        if(empty($second))
        switch($first){
            case 'bg':
                redirect('/'.$first.'/home/');

            case 'en':
                redirect('/'.$first.'/home/');
        }

I think it's somewhere in the redirects that things get lost. But I can't figure out why. Any help would be appreciated.

robots.txt:

User-agent: * 
Allow: / 

and the definition of redirect function:

function redirect($url) {
header("Location: $url");
die();
}

EDIT: if that helps also:

Header fields

HTTP/1.1 302 Moved Temporarily
Date
Thu, 13 Jan 2011 11:02:13 GMT
Content-Length
0
Location
/bg/home
Keep-Alive
timeout=5, max=100
Connection
Keep-Alive
Content-Type
text/html
Server
Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8e-fips- rhel5 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635
X-Powered-By
PHP/5.2.11

I see your site showing up in a google search (including the homepage), so it must have been crawled by google. I don't know this auditmypc tool, but i think it's more likely the problem is in this tool.

Try google webmaster tools instead: http://www.google.com/webmasters/

There you can really see if google indexed your site.