I'm having a similar problem. I used the n-lite to slipstream the updates, but when I install the slipstreamed windows, I don't have the initial screen to make an account, It starts directly with the administrator account and the windows classic theme. I only added the updates. I will try to slipstream without the 973540, and see what is going on... #edit: It works. It seems that the KB 973540 is the problem.