I've had the Apples wireless Keyboard and mighty mouse set since Febuary, as they came with my iMac. Anyway, Last week I turned on my iMac and my keyboard didn't work. Assuming it was the batteries I put in a fresh set, turned they keyboard back on and still nothing. The light by the power switch on the back flashes everytime i hit a key, but nothing. The capsalock light does not even turn on anymore. My mac no longer detects MY NAMES WIRELESS KEYBOARD saying it is undiscoverable. So I did a search for any device and found it, it recognises the device as a apple wireless keyboard but I everytime I try and sync it to my computer I cannot enter the pass key because the keyboard will not transmitt anything, So i tried it without a passkey and still same thing happened. It's like my keyboard still knows its a Bluetooth device, but has forgotten its a keyboard. Any idea's would be most welcome.