nfs locking

[Dave]

Hello,
    I'm using nfs on freebsd 6.2 server and a freebsd 6.3 client. On both i 
have to implement nfs locking. I've added:

rpc_lockd_enable="YES"
rpc_statd_enable="YES"

to both system's /etc/rc.conf. On the client i can start nfs_locking and 
both statd and lockd start. On the server when i start nfs_locking only 
statd starts, lockd does not. In /var/log/messages i'm seeing the error msg: 
nfslock: no such file or directory. Can anyone tell me what this file is and 
where to put it?
Thanks.
Dave.