ive seen this only once in a while - it is diffcult to debug:

ZCM 11.1, Novell Client 2 IR2, DLU Policy assigned to Machines.

After successful Novell login there is a long delay of about 30-60 seconds before the user sees the Windows Logon "Welcome" spinning circle.

I think the delay is connected to ZCM Agent Authentication the user sees "Novell login sucessful" and then nothing for about 30-60 seconds. (can click cancel indeed - but then the screen remains empty)

Usually the time from Novell Authentication to DLU - Windows Welcome is only a few seconds - even on the same Machine if i try again.