wpmu redirecting with multi-db

Hi,
I'm trying to install multi-db on my wpmu.
After successfully running the move-blogs script and receiving the green "table in new db" I get a redirect error from firefox whenever I try to go to any other page - specifically the home page and the wp-admin.
if I as much as rename db.php into _db.php, the site goes back to normal.
At first I thought this was a domain mapping issue, so I reinstalled wpmu from scratch (using 2.9.1 HE) and reinstalling the plugin (ver 2.9.2 as well as 2.9.0).
My domain is registered with GoDaddy and directed to my site which is on a VPS using wildcard a record (*.) - this is working fine with the site if not using multi-db, and also works fine with Duncha's domain mapping plugin.
I would appreciate your help.

here's my db-config:

<?php
// Plugin Name: Multi-DB
// Plugin URI: https://premium.wpmudev.org/project/Multiple-Databases
// Author: Andrew Billits (Incsub)
// Version: 2.9.2
//------------------------------------------------------------------------//
//---DB Scaling-----------------------------------------------------------//
//------------------------------------------------------------------------//
// 16,256,4096
define ('DB_SCALING', '16');
//------------------------------------------------------------------------//
//---DC IPs---------------------------------------------------------------//
//------------------------------------------------------------------------//
// Usage: add_dc_ip(IP, DC)
// EX: add_dc_ip('123.123.123.', 'dc1');
add_dc_ip('62.90.255.', 'dc1');
//------------------------------------------------------------------------//
//---Global Tables--------------------------------------------------------//
//------------------------------------------------------------------------//
// Do not include default global tables
// Leave off base prefix (eg: wp_)
//
// Usage: add_global_table(TABLE_NAME)
// EX: add_global_table('something');
$tables = array (
// 'domain_mapping',
// 'domain_mapping_logins',
);
foreach ($tables as $tbl)
{
add_global_table($tbl);
}
//------------------------------------------------------------------------//
//---DB Servers-----------------------------------------------------------//
//------------------------------------------------------------------------//
// Database servers grouped by dataset.
// R can be 0 (no reads) or a positive integer indicating the order
// in which to attempt communication (all locals, then all remotes)
//
// Usage: add_db_server(DS, DC, READ, WRITE, HOST, LAN_HOST, NAME, USER, PASS)
// EX: add_db_server('global', 'dc1', 1, 1,'global.mysql.example.com:3509','global.mysql.example.lan:3509', 'global-db', 'globaluser', 'globalpassword');
$dbUser = '----';
$dbPass = '****';
$dbPrefix = 'mainmu';
$serverip = '62.90.255.35';
$serverip1 = 'localhost';
$databases = array (
'0',
'1',
'2',
'3',
'4',
'5',
'6',
'7',
'8',
'9',
'a',
'b',
'c',
'd',
'e',
'f',
'vip1',
'global1',
);
//add_db_server('0', 'dc1', 1, 1, $serverip, $dbPrefix . '0', $dbUser, $dbPass);
foreach ($databases as $db)
{
add_db_server($db, 'dc1', 1, 1, $serverip, $serverip1, $dbPrefix . $db, $dbUser, $dbPass);
}
add_vip_blog(1, 'vip1');
//
// Note: you can also place this section in a file called db-list.php in wp-content
// EX: add_db_server('global', 'dc1', 1, 1,'global.mysql.example.com:3509','global.mysql.example.lan:3509', 'global-db', 'globaluser', 'globalpassword');
//------------------------------------------------------------------------//
//---VIP Blogs------------------------------------------------------------//
//------------------------------------------------------------------------//
// Usage: add_vip_blog(BLOG_ID, DS)
// EX: add_vip_blog(1, 'vip1');

Tommy