I think this is basically a FAQ, but I don't see it covered in the Premiere FAQ. I currently have my Tivos (currently Tivo HD + S1 with the ethernet adapter card) do their daily calls via WiFi bridge, and in the past have even gotten netflix streamed this way.. But the bridge connection does sometimes go down. How much does the XL4 really need the network? Is it only in HD menus that it needs it? (i.e. I would use SD menus if that alleviated the problem).