lockd problem

[Tiziana Manfroni]

I have a NFS server with kernel-2.6.13-1.1526_FC4smp on fedora4
Sometime I have an error such as:
Sep 25 12:32:39 x.x.x.x kernel: RPC: error 5 connecting to server x.x.x.x
Sep 25 12:32:39 x.x.x.x kernel: lockd: couldn't create RPC handle for x.x.x.x
every one minutes. What is the problem?
When I restart nfs I have the same message so I can't kill it.
Do you have any idea to resolve these problems?

Thanks in advance

	Tiziana