I have bluetooth keyboard and mouse with my G5 iMac and that's fine, but I'd damn well expect hardware from the same company to work together. Mixing and matching is usually a much tougher test, and a year or so ago I gave up on trying to link a Sony Ericsson T610 with a T30 thinkpad, it just would not work. However, I tried again recently with a T40, MS bluetooth mouse and a S/E K700i and it's simplicity itself. I don't know if I've been lucky or if it has started to settle down.