I just installed Knopix to HD and set the language to GB (UK english) in KDE. I found that whanever I use a console either in KDE or remotely via SSH all the menu options in nano or messages in VI appear as question marks i.e. "??????". Any text I type appears normal.

I have tried dpkg-reconfigure locales and setting the default language to english UK but no change in symptoms, even after reboot.

What's going on?