I have a windows 7 image that I will deploy to a system. I leave the initial account as the local administrator available for any modifications that need to happen to the computer down the road. I also join the computer to a domain.
Now, when I restart the computer I find that the non-builtin local administrator is no longer in the local administrators group!
What could cause this? My first guess is group policy, as I will add the account back to the local administrator group, but then it is gone once again after reboot.