Fresh CPanel Install - Can't log in to WHM as root

[epho]

Hello helpful experts!

So I just installed a fresh copy of the latest CPANEL on a freshly formatted Centos 5.4 server, I've installed this on other servers before and never had this problem. When I access the server from my browser and go to server-url:2086, I get the authentication box, but it won't accept my root login. I've tried changing the root password via console with the "passwd" command, but it still won't let me login. I am at my wits end here. Please help.

[Infopro]

What happens if you use the URL mentioned in the setup docs?
1.Type https://$IP:2087 in your preferred web browser