I am experiencing a very weird bug with the Apple Wired Keyboard with an iMac running OS X Mountain Lion. Whenever I press a key on the right lower part of the keyboard (list of keys at the end), the volume starts to go up uncontrollably and does not stop until it is lowered using the F11 key. I tried unplugging the keyboard and replugging it and it did not change anything. Also tried rebooting (and a lot of the basic troubleshooting) but it did not work. Here is a list of all the keys that activate this bug 1,2,3,0 and ; on the numpad left arrow key down arrow key right arrow key right command key Just wondered if anyone else experienced this bug and if someone knows what to do. I am not very good at explaining so if you need any clarifications please tell me. Thanks for your help in advance.