After recent dist-upgrade (SID) to Xorg 7 the dead characters (ŽÁČ) work only in GTK programs (Gimp, Firefox). They do not work in KDE apps, they do not work in Openoffice.
Konsole is even not able to correctly display national characters like: ěščřžýáíé Just for info: my locales are cs_CZ.UTF-8