WordPress MU

I'm using WPMU version 1.2.1 and am getting an XML parse error when I attempt to load my feeds in the "Meta" section in the sidebar. Feeds fail for RSS and Comments RSS. See this URL to check the error:
http://129.62.34.12/lance_grigsby/feed

Thanks for any help ...

Actually, forgot that you won't be able to access that site due to the fact that it's behind a firewall on a test server. Anyway, the error I'm getting is this:

XML Parsing Error: not well-formed
Location: http://129.62.34.12/wpmu/lance_grigsby/feed/
Line Number 1, Column 3:

Might have to do with MU on an IP address. It doesn't like that at all, and to be perfectly honest I didn't think it would let you use that as a domain.

Second, is that it is installed in a subdirectory off the root, which MU doesn't like either.

Thanks for the suggestion. We'll take a look at that ...

I am having the EXACT same bug, could it be because I am using this code on my /index.php ?

´<? $ip = $_SERVER['REMOTE_ADDR']; ?>
<? echo "$ip"; ?>
<? if ($_SERVER["REMOTE_ADDR"] != "201.0.56.555") header("Location: http://www.mysite.com/index.html"); ?>
´

if you don't know, its a code to redirect anyone who isnt me, because I am working on a new layout for a site already running. Wordpress 2.5

I would remove and test it, but I really cant. Until I release the site... And I cant release with the bug lol.

So, I really need help ^^