Oh, that's nice -- Mozilla and Opera cannot connect to anything and even a .NET HttpWebRequest fails; IE works on http connections, but not https. But, I can connect to secure sites from within a VMWare session!
Sigh. I've deleted my network adapter and it got automatically re-installed when I rebooted, but the problems continue.
When I run a .NET HttpWebRequest on my own domain, the exception I get is the nonsensical
Unhandled Exception: System.Net.WebException: The underlying connection was clos
ed: Unable to connect to the remote server. ---> System.Net.Sockets.SocketExcept
ion: No connection could be made because the target machine actively refused it
at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Sock
et s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state,
IAsyncResult asyncResult, DecrementTimer timer, Exception& exception)
I have a feeling this is going to suck big time...