Do you have a laptop that you can check the signal strength with by any chance? It could be the room that the PS3 or the router are in, or even the orientation/location of the router. Mine was initially at about 65%, so I relocated (by just 2 ft) and changed the orientation of my router and now I get 80-90% I still get disconnected every once in a while, but it usually comes right back and I have about the same connectivity with 3 laptops.