WinXP Preparing network connections takes 1-2 minutes

Just added a domain controller to a network and added all client systems to the DC (running Win2k3 SBS Standard).

I haven't gotton many complaints until yesturday when the owner got back. He's complaining that when he boots up his system for the first time it hangs on preparing network connections much longer than before the domain. Once you can hit Ctrl-Alt-Del and login it works just fine and if you log off and log back on it's fast. Only on a full bootup or restart does it take a while. I tried to explain that sometimes when the DC is added to the network, your login times will grow longer but that's not the answer he wants to hear.

I saw this and it may help me.
https://www.experts-exchange.com/questions/21329972/preparing-network-connections.html

I'm going to try that tomorrow as it may help some but if anyone else has any ideas on getting faster boot times after adding the domain any help would be great!
This happens on a couple other machines too but they are never restarted so the users don't really complain about it.