My A1243 keyboard special keys don't function
I have a Mac Pro and I just switched out my old wired keyboard (the one with the clear plastic casing) for the newer A1243 model, all sleek and aluminum and stuff. This includes the special functions for the function keys (volume control, expose, spaces, etc.) However, these don't work. They still do what I set them to do (F12 is dashboard, F11 All windows Exposé, etc.). And, before you say it, I've checked system preferences, and the box next to "Use all F1, F2, etc. keys as standard function keys" is UNCHECKED. This isn't too much of a problem, except that I currently can't change my volume from the keyboard. Any way to solve the problem? Happy to give more info.