So far the upgrade to Mint 17.1 is not going well.  NFSv4 idmapd functionality seems entirely broken, and even going to NFSv3 where UID’s are mapped properly, I still can not login with an NIS login using either freenx or x2go and nothing is showing up in the logs to give an idea why.

     I do remember there was some program that was supposed to cache authentication responses to speed up logins that never did work properly with NIS and I had to remove it from the other machines, but I can not remember the name of it.