NFS server not working on my laptop
 

Ive been trying to set up seperate NFS servers on two Laptops ( one is an Acer Travelmate and the other is a Compaq Presario... if that is of any consequence). Both are running Core 2. The nfs daemon is running ( # /sbin/service nfs start ), and the shares get exported without a hitch ( or so it seems). However when i try to mount the shares on another system ( any one of the laptops being the server ), i get an error saying that the server is down. This problem never occurs when i set a normal desktop to host an nfs resource; so there is no question of wrong permissions or anything of that sort. Also the installation on both the laptops is a 'full' install, and so there is nothing missing. I have configured no firewalls.
Is there any other daemon that must also be running except nfs?
Obviously, there is no problem in mounting nfs resources shared elsewhere ONTO the laptops. How can this be solved?

Check and make sure that the portmapper (portmap) is running. You can do a "rpcinfo -p localhost" and make sure that nfs and mountd are running.

I know this sounds stupid, but I find the man entry for rpcinfo, and don't see the binary. I checked /sbin ( which is not in my PATH environment variable ), and ran a search with no success.
However portmap is running, but I don't see mountd.
'/sbin/service mountd start' does not work. but I know that I have done an 'everything' install. So it must be there. Is 'mountd' the full name or is there something else?
Thanks.