Hi Clint I've got NFS4 running on F11 and your configuration looks fine to me. > {The Client} > > [root at silver ~]# cat /etc/idmapd.conf > [General] > ... > [Mapping] > > Nobody-User = nfsnobody > Nobody-Group = nfsnobody You may want to check that nfsnobody is defined on your system and rpc.idmapd is actually running. Also the output from rpcinfo might help. >>From /etc/fstab > inf1:/ /test nfs4 > auto,rw,nodev,sync,_netdev,proto=tcp,retry=10,rsize=32768,wsize=32768,hard,intr > 0 0 I'd probably want to keep things simple while you are testing. Perhaps cut this back to: inf1:/ /test rw,noatime,sync,hard,intr 0 0 Running tcpdump at both ends while you try to do a directory listing may provide some insight (which process is waiting for a response from whom) Err grasping at straws ... you may also want to check for any old stuff you may have in /etc/hosts.{allow,deny}. Hope this helps, Kal