NFS Quota problem

Hi!,

I have server + few diskless workstations on Redhat Linux
From server to stations /home (on which quota is enabled) is sending
via NFS.My problem is that on stations quota is not working,but on the
server works fine.

When I type quota <user> on stations it appears:

" quota: Error while getting quota from /dev/root for <uid>: Cannot
find file or directory "

and below it shows correct value of <user> quota from server.

Any ideas?

Thanks in advance