using a 877 router with a site to site VPN we are getting a connection issue when trying to map a drive from a server to a Pc accros the VPN tunnel we can ping and see the end PC but when we try to map a drive from server to PC we get a Semaphore time out message on the sever we are using. But the strange thing is on another server connecting to the same PC everthing works fine. Has any had this problem before as we are lost as to what is casiung it ?