About three days ago I started having a strange latency problem with my internet connection. When I click on a link, it takes a long time to load and sometimes doesn't load at all. If I click on the "stop" button and then "reload", it loads very quickly. This doesn't happen every time I click a link, or with every link I click, but it's happening often enough that it's seriously slowing down my browsing. I'm on a Mac Pro connected via ethernet to a Comcast high speed cable connection. The cable modem is also connected to a D-Link router with a wireless network, which we use for the three other computers in the house. Here's the strange thing: the other three computers aren't having the same latency problem. It's just my Mac Pro connected directly to the network that's having the problem. Any ideas where to start looking?