We have upgraded ftom 10.2 to 10.3 over the last few days. This has raised an issue with long (as in 15 to 20 minutes) login times under certain conditions.

1 - PC connected to domain using domain account - login ok
2 - PC connected to domain using local account - Extended login
3 - Laptop connected to home / hotel network - Extended login

I did some trouble shooting and found that if I remove the network cable in scenario 2 above, the login time is normal, but thats not an acceptable solution.