I bought an apple wireless keyboard (which works perfectly) and a Logitech V470 bluetooth wireless mouse, to use my MBP on my TV. I notice that there is a slight delay in mouse movements. It is very slight but kind of annoying. I was just wondering if this effect might be limited to just logitech mice, or if all bluetooth mice are plagued by this effect? If it is all bluetooth mice, are USB mice faster (such as the logitech VX Nano, which uses a tiny usb adapter to connect)? Lastly, does the mighty mouse have any noticeable lag? This is a last resort however, as I do not like the mighty mouse much at all. thanks in advance.