I use an outside internet connection. I have 4 locations connected to my server via T1 running 2811 routers. About 6 times a day, one location will have a workstation that goes unresponsive to the network. I can clear the ARP and it will go back to work. This happens to any workstation at that one location. Noone else has a problem. Is it my numbering system(188.8.131.52) that is having to look for a route or what could it be?