We an AD domain and are mapping drives back to a NetWare 6 sp3 server
using NFA. This is generally working without problems by matching the
user's username and simple password to their AD username and password.
When the user logs in the drives usually map without asking for a
password. Sometimes however an authentication problem will start occuring
with some user accounts where the user can't authenticate via nfa. Even
browsing to the share over the network and manually entering the
username/password will not work. Resetting the simple password and ad
password also seem to have no effect.

Any ideas?