Problem: Users passwords expire. They get prompted to change password.
They comply and type in new password. When they click ok they get
a "fffffda7" error message.

They have to use grace login to log in. This error is a -601 no such entry
in NDS error. The server they are connected to is a NW 5.1 box that holds
the master replica of the partition that holds their user account. This is
happening for multiple users at multiple sites.

The users accounts are old and have 8 entries in their old password

They are using client xp 4.91.

I have tried to find TID's on how to troubleshoot password errors using
dstrace, but no luck so far.

Any ideas?