versions to name but a few they are:
* Locking and mounting is now handled directly by the NFS protocol rather than by seperate deamons.
* The protocol is now stat... over previous versions is in the way exports are handled. Rather than have several (easy to understand) exports you now have to build a virtual export ... read only. The idea behind this is that I don't want people mounting / and writting files to it when what I really want them to do is mount /home or /data. It also mean... hide option is necessary even though the exports man page indicates that bad things can happen when it is used. The home and data directories are bind mounted into the nfs4e
