[Samba] local/roaming profile default

[Chris Smith]

IIRC when using an MS PDC the workstations use local profiles by default
allowing an admin to change a profile to roaming, if desired.
When using Samba (2.2.3a) as a PDC the behavior I see is that every
users that logs on gets a roaming profile by default. This is quite
problematic.
As a workaround I've set both "logon home" and "logon path" to nothing
("logon home ="). This does provide for local profiles by default but
I'm not sure if it will allow select profiles to properly roam. As a
side effect (I don't what else to attribute it to at this point) I've
seen some cases of local profiles simply disappearing.
What is the proper way to allow for some roaming profiles yet have the
default be local profiles?

Thanks.

Chris