I've pretty much narrowed this down to a problem with Windows 7 now. I have 2 other computers and a PS3 all with wired connections to a D-Link 8 port switch and they all work fine. It is only the PC with Windows 7 that is having the problem and it just started after the last windows update. I connected another PC with WinXP to the same ethernet cable and the connection worked fine. I'm currently backing up all my info in case I have to format and reinstall but would really like some ideas to fix this problem. In the event viewer there are a lot of 7000, 7001 and 7009 errors for the following services -> network store interface service, diagnostic service host service, network list service, network location awareness service, winhttp web proxy auto-discovery service, dhcp client service. I have been searching google for possible fixes but have not found anything yet. Suggestions anyone?