Hi, Rather desperate right now. Home network with Wifi and ethernet. Using 3x Notebooks and 3x workstations. Problem: One of the workstations(W7 ultimate) keeps changing between Public and Home. When this happens, the internet connection dies. I cannot see other workstations either when on public network. Workstation using wifi. Does the same on cable. When it changes to Public, it disconnects from the internet and I cannot get to the router even though it has the workstation has an IP(DHCP or static). Default gateway and subnet is correct. TCP v4 is being used and nothing else is enabled. Why is this happening? - I have tried DHCP as well as Static addresses - Reconfigured NIC(Netgear WG311T), uninstalled and reinstalled it. - Removed Wifi connection and re-added it. - Changed auth type, encryption type and keys to connection Have I covered everything? The only thing different is that I installed a new router - Duo Plus 300wr. It cannot be the router because all the other notebooks connect to it wireless and so does my iPad, Android device and tablet...so it rules that out? Next.....? Thanks for any help you guys are able to offer. Appreciate it.