I have Lucid and Windows 7 installed on the same machine. My internet when using Ubuntu no longer works, but I can still connect to the network. I can connect wirelessly or directly to the router (running dd-wrt). If I reboot into Windows, the internet works. I didn't change any network settings before the it decided not to work. I don't know what commands to run that will help in diagnosing the problem since I am a noob, so just ask and I will post.