So what to do? Buy LittleSwitch X, for example? Or try every letter on the keyboard. And that's what I have done: try the letter A; it works!
[robg adds: I asked some friends with non-English keyboards, and after some experimentation, it seems the OS is looking for the key that is in the position of the Q (and H, if you want to hide an app) keys. So on the French keyboards, the A key is where the Q is on an English keyboard -- immediately to the right of the Tab key. At least, this is why we think this works; if you have more knowledge about the subject, please post your comments.]

