the pairing apparently works only with the KDE3 tools and NOT KDE4 as published in one of my blog articles: Howto pair openSuSE 11.2 bluetooth with Nokia devices
however
since 2 or so days my own DUN connection fails as well. I am too busy with server upgrade but i have to look into that new problem again asap
since we now have opensuse 11.3 out already since a few days, its time for upgrade asap and things might work again the published traditional way.