For the past few days, I've been having problems connecting to Xbox Live with my Xbox 360 S. The Xbox says I have an ethernet cable connected when I don't. I have never had an ethernet cable connected - always wirelessly connected. When I try to check my connection options, the wireless connections flicker up but then go away again. Also, a few days ago, I had problems with the Xbox starting up. It has been slow to start up, and I did get a single red light in the center once. Any ideas?