I can't type a capital w (i.e. "W") by holding down my left shift and the "w" key. If I hold down the right shift key, it works fine. Lower case w works fine. Any other capital letter using the left shift also works. So it's only the left shift and "w" combination that seems not to work. Bizarro world, but VERY frustrating. I borrowed another apple keyboard and the same thing happens - so it would appear to be a software problem. Any thoughts?