I currently have colasoft Capsa 6.9 Enterprise edition installed on a Dell Latitude D600 laptop at one of our remote locations. The location consists of about 50 workstation connected to 3 HP Pro curve switches. I have a hub connected between the switch and the router (which is a 512meg dedicated frame back to our home office). The laptop is plugged into the hub. I vnc into the laptop to watch the network traffic. When I check the diagnosis tab I noticed that the TCP invalid checksum is almost as high as the whole transport layer. I also am getting hundreds of DNS Host or Domain not exist errors.