David Dyer-Bennet wrote: > I'm not sure I especially care about NFS V4 (this is to share the > programmers' home directories, so it's easy to work on any of the > production systems; it won't be particularly high-load or any particularly > strange usage pattern), but I care about understanding things at least. > > Both systems are running Centos 4.6. > > Any ideas? Try it entirely as root instead of with sudo? Also see this it may have useful info: http://www.citi.umich.edu/projects/nfsv4/linux/using-nfsv4.html I wouldn't bother with NFSv4 myself, looks too complicated. nate