OpenSuse, in version 12.2, still offers and supports
KDE3!
Well, they provide a repository with KDE3 packages, but I would be cautious to
call
it "supporting". More and more features break and simply don't work. Seems
that the code is not
updated to wokr with latest PolicyKit. I tried installing Suse 12.2 with KDE3 but gave up
after
two days when I realized I wasn't even halfway done with fixing serious issues like
kpowersave
and wireless network not working under KDE3.
Janek