Actually this is a bug with X11. The bug is somewhere in /usr/share/X11/locale/.
I can't tell where exactly besause I used a workaround: just copied /usr/share/X11/locale/ from working Dapper distro into my Edgy one.
So if anyone happens to know X11 please make further debugging, my knowledge is insufficient for that.
The very same bug appears in many places in Edgy. I found it in the OOo, X11 and other sections.
I have found a hint in bug #64336:
Actually this is a bug with X11. The bug is somewhere in /usr/share/ X11/locale/ . X11/locale/ from working Dapper distro into my Edgy one.
I can't tell where exactly besause I used a workaround: just copied /usr/share/
So if anyone happens to know X11 please make further debugging, my knowledge is insufficient for that.