Here's a weird problem. Not sure when it started because I almost never use the key, but the LaunchPad key (the F4 key) no longer works to bring up LaunchPad. The Mission Control key and all the other top row keys function properly. The key isn't assigned to anything else. And it's not bringing up the Dashboard, either, like the Leopard/Snow Leopard style keyboards would for the F4 key. Now, if I use the Keyboard settings to assign LaunchPad to fn-F4 (i.e., not the specialized key but an actual function key - even though they're the same physical key) then LaunchPad will work, so I know the key itself is still working. I tried reseting the Keyboard control panel to default settings on every page. Still no go. The 4-finger pinch gesture on the trackpad still works to bring up the LaunchPad. Anyone see this? It's quite odd. My wife is out of town with her MacBook Air so I can't check to see if hers is working correctly and I don't have any other Lion-style keyboards in the house.