Hi, I have the follow problem: If i click in the radio option 'Enable NetBIOS over TCP/IP' (ont the 'Advanced TCP/IP Settings' Windows Wins folder), the intranet works 40 seconds and stop aproximately 12 seconds. And repeat this cicle continuously. But, if i clickin the radio option 'Disable NetBIOS over TCP/IP' (in the same window), the intranet works normaly. How to solve this problem? Thanks in advance. Roger Fernandes. rogerfsp@gmail.com rogerfsp@hotmail.com Ps.: My work station works with Windows Server 2003 R2 and i access the intranet in another machine with the same configuration. Another work stations in the lan, works with Windows XP SP2, and have the same problem.