Attention All 360 Owners.

I did read it :) It did not help.

I don't throw the manual out the window, just back in the box.

I was having the same problem for about 10 minutes. I had a wireless network adapter connected to my 360 and it worked fine on a non HDTV but on the LCD it didn't work. I checked the IP addresses on the 360 and the laptop and they were the same so it wouldn't work. Then I fixed it and it's all good now :)