The problem is not the NFS itself but the mount process. But the very first question is: which NFS? NFS3 works completely different than NFS4 (and NFS2 is still - theoretically - available although only rarely used these days).

hmm... and it is still listed as "mounted" when you issue a mount command? Please check again because this looks unfamiliar.

How did you do that? NFS is controlled by the "system resource controller" and you have to stop/start it from there. FIrst, get the status (if you are unsure, please post the output of these comamnds, enclosed in CODE-tags):

Code:

lssrc -g nfs

Then stop it and/or start it. Before stopping it check for exported directories in /etc/mtab. If this file is not empty there are exports defined. Make sure other hosts are not affected by the stopping of the service.:

Code:

stopsrc -g nfs
startsrc -g nfs

Before restarting the NFS check if there are NFS mounts defined in /etc/filesystems.