Hi,
I'm using Polish "programmers layout" with pdaxii13 on Akita. Had to remap few symboks to free 'l' and 'e' up. Other than that no problems, Fn+key works ok.
Try to load the keymap manually. Open terminal in X and do 'xmodmap /etc/X11/kb/spitz.xmodmap' (if I remember the path correctly). That should give you Polish keyboard.
If that's the case, make sure your window manager setup calls xmodmap.
Regards,
Yatza