Thanks a lot, guys, for your answers. I've found problem. When I began to work with RedHat 8, I played with font settings under KDE and forgot about it. Later, I've upgrate RedHat 8 to RedHat 9 and some happend with font '6x13*font', but KDE settings still remembe about this font. It caused problems. When I've drop directory ~/.kde and restarted my computer, problem was resolved.

You can ask me, why I made this post. I hope that it will be useful somebody and will save time and nerves ;-))