I run a computer lab in which the machines radomly prompts the user for
and windows password after they log on using a DLU. The second login
should not occur.
This problem seems to come and go with no real rhyme or reason. I have
turned on debug loggin but deciphering the logs is difficult.
I found TID #10096241 :

I am wondering about fix #1 which states there must be only one
zenpol32.dll on the machine.
I have found an "extra" old zenpol32.dll under c:\install\netware (a
directory I created to expand the client install). I am wondering if a
version of zenpol32.dll in that non-system directory could being
causing the intermittent problems?