Not an elegant solution, or one that sheds any light on the nature of the problem, but this process worked for me:
1) Removed everything from the default run level except for
the system logger and net.eth0.
2) Rebooted and started nfs by hand successfully after the
reboot. Added nfs to the default run level.
3) Repeated steps 1) and 2) for each additional program I
wanted to add the the default run level. Everything seems
to work fine now.
John Blinka

