For a while I've suspected this, and now with NFS it's really 
bad.Traffic from one end of my network gets 'chocked' every now and 
then.

I have clients that mount a nfs share from my file server. While moving 
data to or from the fileserver all traffic (on all clients) hangs for 
10-15 secs every 5-10 minutes, then it is back to normal. Besides the 
fact that this is very annoying, I don't know how to debug it.

Here's my setup

Client ------ switch ------ file server

I though, that maybe that file servers NIC is re-genotiating the 
ehternet speed (or something like that) every now and then, and this 
hangs the connection.

Any ideas? Thanks in advance.

Daniel