After further review... by a number of people, its been decided
the /etc/nfsmount.conf file will be installed with the default
protocol version set to v3. This will stop the mount failures
with older Linux servers but make it very easy to make v4
the default version. A nice compromise, IMHO...
Note, with nfsmount.conf file one can configure mount options
per mount point, per server and globally (which is how the default
version will be set). See the nfsmount.conf(5) for details. So
I strongly urge you try the v4 protocol by setting the version
to v4 in one of those sections...
The new nfs-utils rpm will be ready shortly...
My apoloizes for all the excitement... It was truly unintended
and unexpected... :-\
steved.