nfsserver only serves NFS version 2 and not all clients are smart enough to try multiple NFS versions, so you may have to specify it, typically like this (in /etc/fstab):
nfs:/ /n/9 nfs nfsvers=2,proto=udp,user,bg,intr or as a command: mount -o bg,intr,-2 thinktank:thinktank /mnt/nfs Consult your (l)unix manuals for the precise options.
