I have a Dell XPS 630 system with Vista Home Premium 32 bit. I am connected to the Internet by cable modem. I like to play COD World at War online and here recently while playing online I'll get kicked for losing "map packets". I'll run windows diagnostics and get a msg "cannot communicate with primary dns server". The only way I can get back online is to reset the modem by unplugging and waiting a few minutes before plugging it back in. I disconnected my wireless system thinking it may be the router and hooked the modem directly to my PC. No such luck as the problem still occurs. I contacted my ISP (Cox) and they assured me it's not a problem of theirs. I changed cables thinking I had a bad one but it still occurs. My NIC is Nvidia nforce 10/100/1000 and the driver is up to date. Any help would be highly appreciated.