My Windows installation has Latin and Cyrillic inputs enabled, but uses the English layout.
And I suddenly realized that non-unicode programs can not display Cyrillic symbols. They are displayed as
So it seems that my codepage became broken or something... I believe it should be
Windows-1251. But I don't know/remeber is there a global codepage settings? Maybe somewere in registry? I would prefer to not reinstall the OS.