im having some terrible laggy and unresposnsive performance with the magic mouse that came with my new MP. Is anyone else experiencing this problem? Ive read before that there might be issues in the old mac pros, but I take it they havent fixed anything ? I have an airport extreme as my router thats right next to the MP (wont be able to move it too far if that helps though...and I also cannot switch to 5ghz band as some people have previously suggested) so any other solution possible to have a normal working magic mouse?