On Mon, Oct 16, 2006 at 08:59:57AM +0200, Lubomir Kundrak wrote:
> what terminal or terminal emulator software do you use? Which encoding
> is it configured to use? What is your LC_ALL and LANG set to?

I managed to reproduce it.
Start screen (from pkgsrc). Start mutt. Open mailbox with threads.

TERM=screen, running in an rxvt
LANG, LC_ALL (empty)

 Thomas