> Can't you samba-export at the source instead of the nfs mount? Even if it works > it seems like an inefficient way to do things. > Yes, that makes perfect sense and thats the second stage of our migration from the old E450 Solaris 8 box (which hosted everything via a single samba instance, with NFS mounts from other storage that didn't support running samba) . We ARE moving to direct samba mappings via the netlogon scripts to the servers hosting the file systems, but we have over 1200 smb shares across 40 or so 1Tb+ file systems and that all takes time and testing... :-) However, at the risk of being a pedant, that doesn't give us a explanation as to why the same setup on CentOS & RHEL resulted in the behavior we experienced. NFS mounts are surely not that uncommon on samba servers and one would expect the locking mechanisms to cope with that scenario. It surely does on our old Solaris box. We will be investiaging this further since our migration is going to take a couple of months and like JD pointed out in a previous post the no locking option shouldn't be needed. D