I just wanted to make a statement. I have my hub connected to my HDTV along with XBox 360, Wii, PS3 without any issues. The one thing I start to notice is the HUB occasionally loses Wifi connection I have the Netgear entertainment Wifi key 2.0. The signal strength is strong but drops connectioon once in a while. This is horrible my Wii, PS3, Xbox never drop a connection. [edited]
Maybe the quality of that wireless usb adapter that you are using is not good. Its the wireless usb adapter that connects your hub wirelessly, so that I think could be the problem.