for ubuntu 8.04LTS through 10.04LTS you can resolve the problem which creates the error message:
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "en_US:en",
LC_ALL = (unset),
LANG = "en_US"
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: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
with the following two commands:
% sudo locale-gen fr_FR fr_FR.UTF-8 en_US en_US.UTF-8 % sudo dpkg-reconfigure locales