The link is broken. I guess you want to point at http://wiki.maemo.org/Fremantle_Unsu...ds_and_mice.29

I know that page, I followed the mentioned steps and it already did work. At least until I followed the given advice to uninstall bt-hid-scripts, which obviously broke bluetooth support of my keyboard. Does uninstalling of bt-hid-scripts revert changes manually made to /etc/bluetooth/main.conf? I first changed this file, then installed bt-hid-scripts, then it worked. Now it doesn't work anymore.
I'm just running a backup. As son as it's done I'll check that file again.