DFS namespace

Hi,

We actually have a file server on Windows Server 2012 with DFS namespace configured on VM (VMWare). The system and its its shares have been working properly for 1 week.

AD is actually on Win Svr 2008 R2

However now from time to time the file server is "freezing" with the DFS manager having taking time to load the defined shares (hence causing latency at server and user level)

Please help