Auto Login to Windows DOMAIN??

I just created a new windows 2003 domain. All users connect with no problem. Some users even share workstations.

I have a policy enabled to remember the last user to sign on. However, on one of those machines with multiple users, whenever the computer starts up from a reboot, it automatically logs in a particular user on the domain that I have set up an account for on that machine. Its always the same user that gets logged on automatically. You never even get prompted to hit ctrl+alt+del or for a password. All other users in that OU connect fine without this problem. ITs only that machine.

I have also tried removing the “remember last user to succesfully login” policy from that particular OU and no luck.

Any suggestions??