When typing ribo command / command-not-found has crashed!

[lepatron]

Binary package hint: command-not-found

unsupported locale setting
Traceback (most recent call last):
  File "/usr/lib/command-not-found", line 19, in <module>
    parser = OptionParser(version = __version__, usage=_("%prog [options] <command-name>"))
  File "/usr/lib/python2.5/gettext.py", line 584, in lgettext
    return ldgettext(_current_domain, message)
  File "/usr/lib/python2.5/gettext.py", line 556, in ldgettext
    return t.lgettext(message)
  File "/usr/lib/python2.5/gettext.py", line 366, in lgettext
    return tmsg.encode(locale.getpreferredencoding())
  File "/usr/lib/python2.5/locale.py", line 514, in getpreferredencoding
    setlocale(LC_CTYPE, "")
  File "/usr/lib/python2.5/locale.py", line 478, in setlocale
    return _setlocale(category, locale)
Error: unsupported locale setting
Python version: 2.5.2 final 0