Hi, i'm not sure if this is the right place to post this thread but this issue is stressing me out. Here it goes. I used Lion OSX all this time with the wired keyboard F4 set as Launchpad. Yesterday I restored all the keyboard setting to default and suddenly F4 Launchpad doesn't WORK! Only other keys such as brightness, volume, and mission control works normally but just the launchpad key (F4) isn't working as it did before. Looked everywhere copy pasting some file to preferences and even travelled back time on my time machine. But no luck... I tried to set Launchpad to F4 but it's just F4 key that's not accepting. F5 F6 goes thru the setting... Weird.. This problem is driving me crazy... Please HELP ME!