I have configured Cisco ACS v4.1 to control network accessing. When a domain user logon, it takes a few seconds to logon using credentials. However, it takes around 1 minute to get the authentication successfully. The problem is the computer can't talk to the DHCP and DC when logon. The network status shows Limits or not connectivity. The ipconfig shows it uses auto ip address 169.254.x.x. To obtain an IP or talk to the DC, the user needs to enter ipconfig /renew or re-logon. How do you troubleshoot it?
I have this problem too.