After all that work sorting out my user profiles, and reducing my logon time as far as I can (record is 12 seconds from entering password to a working desktop :-) ) I have found another problem.
The clients are booting up fine, pulling the config files from the network and running the right applications. However, once they have been logged out and returned to the Shutdown/Reconnect dialog, there is no way to reconnect to the server.
When you click it, it starts to try to reconnect, and then flickers, and then returns to the Shutdown/Reconnect dialog, just going round and round in a circle. If I shutdown and reboot, it all works fine.
That’s tomorrow’s challenge now I feel.