ZCM Login Prompt

OK, something changed. On clients that were working fine, I am now
getting the ZCM login prompt. Entering the user password does not
work. Canceling out of the dialog works (Gets them logged intot the
workstation, but the user is not logged into ZCM).

DLU seems to be working as it is assigned to the workstion not the
user.

I don't know what change?

ZCM=10.1.2, SUSE
XP SP3