Comment 28 for bug 94282

And allow me to explain my situation more in detail:

I have installed Ubuntu, set fontconfig preferences ,mainly in etc/fonts/language-selector.conf (which is linked to /usr/......./zh-TW), following various instructions on the Web, and in GNOME and for Gtk+ applications, all English fonts can find subtitutions according to the substitutions of Sans, Serif or Monospace. But such thing doesn't happen in KDE, even if I have installed kde-i18n-zhTW, so for example if I set Purisa as the menu font, the Chinese characters would be rendered from Kochi, not Microsoft JhengHei which I have set in fontconfig --- just the same with all those symptoms you have reported above.

So, it seems that nothing has been fixed radically in Feisty since March, although on Trolltech track system it's said this issue of Qt was fixed since 3.3.9. What should I do to fix my Kubuntu (actually I just installed kde-desktop on Ubuntu) ? Do I have to change my locale somewhere? (But I am using zh-TW translations already!) I'd really appreciate you because there doesn't seem to be any decisive solution on the Web along my search.

Cheers.