In both KDE (e.g. Konqueror, Kmail) and GNOME (e.g. gedit) applications Cyrillic letters are displayed as double-width.
Ah, that was a long time ago that I had that problem. (But for me mozilla used to have the problem too, not any more though)
I just tried again with gedit, and I cannot reproduce it. When I run
LANG=bg_BG.UTF-8 gedit
I see a lovely gedit with Bulgarian (cyrillic) menu's.
When I run normally (With LANG=en_IN.UTF-8), but start typing Bulgarian (cyrillic) text, the letters appear normally in the edit-window.
Maybe you want to specify what versions of (possibly) affected packages you are running? I'm running:
$ dpkg -l gedit xserv\* xlibs konqueror|grep ^i ii gedit 2.6.2-1 light-weight text editor ii xserver-common 4.3.0.dfsg.1-4 files and utilities common to all X servers ii xserver-xfree8 4.3.0.dfsg.1-4 the XFree86 X server ii xlibs 4.3.0.dfsg.1-8 X Window System client libraries metapackage ii konqueror 3.2.2-1 KDE's advanced File Manager, Web Browser and
Also, when I use konqueror to vizit for http://www.news.bg, the is displayed OK.
-- Groetjes joostje 8b534037349343140df39156acbede5c-de402678bcb40866dc0b29def3543aaa06193eef