samba - Jul 2006 - Logon path/drive/home question in mixed 9x/XP network

As far as I understand it, in a 9x/XP mixed network using roaming profiles, 
I have to specify:

     logon home (for the 9x profiles)
     logon path (for the NT/2000/XP profiles)
     logon drive (for the NT machines)

The upshot of this is that a network drive is automatically mapped on all 
platforms, eg. on XP where it's not needed.  Is this just the way it 
works... or is there a recommended way of dealing with a mixed network?

Thanks,
Steve :)