pwd: read error in ..

[Guy Harris]

 >I've seen this before when the local and remote machines were both Suns
 >when the permissions on the mount point were too restrictive.  Try
 >umount-ing the NFS file system and check the permissions on the
 >directory that you are mounting to.  If they are less than 777,
 >try chmod-ing to 777 and re-mount the NFS filesystem and see what
 >happens.

r-xr-xr-x (or, for the hopelessly numeric, 555) should be sufficient
(taking away all write permission may help prevent people from sticking
stuff in the mounted-on directory when nothing is mounted on it, if that
ends up being a problem).