We use Win2k3, as an application server. It communicates with only 1 other server (usually). It's running SQL Server 2000 (dont think SQL's part of the problem), and our application. We also set it up to automatically login with a user that's part of the Power Users group (I'll call him poweruserX), by setting the registry.
Occasionally (not really repeatable), when the server reboots (scheduled reboot), it will change the "Default Autologin" from "poweruserX" to "Administrator". So when it does this, is still has "poweruserX's" password (not the Administrator's), so it can't login.
I need to know why it's doing this, and how to stop it.