Prior to OS X 10.8.4, folders and files written to a NFS server were not visible to other Mac systems. The workaround was to un-mount / re-mount the NFS server, which is not ideal.
10.8.4 includes the following:
“A fix for an issue that may prevent changes to files made over NFS from displaying”
This is great for environments with NFS servers such as NetApp, Isilon, Linux NFS Servers, etc…
Thank you Apple for the fix!