I can connect to the server when I log on and after about five minutes I cannot access anything on the servers. I try to ping and if fails about 2 out of four tries. I have installed 3 different Nics and they all act the same I am able to view this computer from the server and open shared files on it I also am able to get out to the internet with this Nic I am connecting to a single windows nt pdc all of my other systems have no problem seeing the server. I reformatted and reinstalled the OS and still have the same problem any suggestions