Problem is that Samba and NDS both stores the password one-way hashed, and 
needs different hash formats.  If you also want the directory to support 
Digest authentication then yet another password hash format is required.

There is basically only two options here to make a directory work with 
multiple authentication schemes

a) Make several password attributes in the directory and make sure the 
tools chaning the user password changes all of the attributes.

b) Have the directory store plain text passwords.  <-- bad!!