samba - Mar 2004 - Loosing group mappings when I reboot Samba server.

Dear list,

On my samba server I made the following group mappings:

For the Domain Admins group:
net groupmap modify sid=S-1-5-21-2075143179-238294558-572307100-512
unixgroup=root

For the Domain Users group:
net groupmap modify sid=S-1-5-21-2075143179-238294558-572307100-513
unixgroup=users

For the Domain Guests group:
net groupmap modify sid=S-1-5-21-2075143179-238294558-572307100-514
unixgroup=nobody

For the Print Operators group:
net groupmap modify sid=S-1-5-32-550 unixgroup=lp

I loose these mappings when I reboot my samba (3.0.2a) server. Is this
normal
behaviour?

TIA,

Erik Hoitinga
http://users.skynet.be/fanzel