@xxxxts Dude I have the very same problem as you!

I have a uk Apple Bluetooth Keyboard.
They say the Apple bt keyboard cames in two versions: one older, with 4 batteries, and a more reliable firmware. The newer, 3 batteries, is a little harder to make work. Maybe you and I have the newer, while freemangordon has the older one?

Some info about my n900: I reflashed a little time ago, I have kernel power, and an overclocked system (tp 850, rock solid). I didn't have any other bluetooth stuff installed.
When pairing I have to type the numbers entering them while pressing "fn" on the bt apple keyboard, followed by a return.
I tried pairing and re-pairing with no success. I have the same log output as xxxxts.

Thanks,
g

EDIT: also see this: http://talk.maemo.org/showthread.php?t=41845 - the first posts say:
The problem with the Apple wireless keyboard is that although it pairs fine, it is not being registered as an input device (hildon-im-xkbtool --list won't show it in its output).

I'm investigating...