I have a kensington wireless keyboard/mouse and it appears to not likethem.Do you have to use a wired keyboard and mouse initially?
It's possibly a Kensington thing - I've never had any trouble with myLogitech wireless keyboard and mouse (except for some of the multimediakeys) and the adapter for that's hung off the end of so many USB hubsit's starting to get silly
Im using a brand new Logitech wireless mouse and a awesome newMicrosoft Ergonomic wireless keyboard. They worked fine.