debian squeeze setting locale fail

dpkg-reconfigure locales
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "fr_FR:fr",
        LC_ALL = (unset),
        LC_CTYPE = "en_US.UTF-8",
        LANG = "fr_FR"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Ne peut initialiser LC_ALL ? la locale par d?faut: Aucun fichier ou dossier de ce type
/usr/bin/locale: Cannot set LC_CTYPE to default locale: No such file or directory
/usr/bin/locale: Ne peut initialiser LC_ALL ? la locale par d?faut: Aucun fichier ou dossier de ce type
Generating locales (this might take a while)...
  fr_FR.ISO-8859-1... done
  fr_FR.UTF-8... done
  fr_FR.UTF-8@euro... done
  fr_FR.ISO-8859-15@euro... done
Generation complete.
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "fr_FR:fr",
        LC_ALL = (unset),
        LC_CTYPE = "en_US.UTF-8",
        LANG = "C"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "fr_FR:fr",
        LC_ALL = (unset),
        LC_CTYPE = "en_US.UTF-8",
        LANG = "C"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
root@ks310515:~# locale
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Ne peut initialiser LC_ALL ? la locale par d?faut: Aucun fichier ou dossier de ce type
LANG=fr_FR
LANGUAGE=fr_FR:fr
LC_CTYPE=en_US.UTF-8
LC_NUMERIC="fr_FR"
LC_TIME="fr_FR"
LC_COLLATE="fr_FR"
LC_MONETARY="fr_FR"
LC_MESSAGES="fr_FR"
LC_PAPER="fr_FR"
LC_NAME="fr_FR"
LC_ADDRESS="fr_FR"
LC_TELEPHONE="fr_FR"
LC_MEASUREMENT="fr_FR"
LC_IDENTIFICATION="fr_FR"
LC_ALL=