The system thinks it is part of the domain and I have tried leaving and rejioning the domain without success.
This evening I gave it another try and it worked!?!
I have changed several things since my last attempt;
1) several days ago I changed from Fixed IP to DHCP
2) today I moved the system from the domain to a workgroup - reboot
3) changed the name of the system - reboot
4) rejoined the domain - reboot
and it worked.
Why? Was it the IP change, the sequence, the name change?