all the time when samba works normal or not ,if I shut samba service or reboot/poweroff Linux ,all though I use "sync" command several times ,at next reboot period ,the system will crash ,only I recovery /etc files from another machine ,then the system will be ok. I use RedHat ES 3.0 .
I don't know if RH 3.0 or Samba gets some troubles.
sorry. There is not enough information here to even wager a guess.
I forgot to tell you I use Model of domain with 200 or more members ,and profile files in their local harddisk.