All other threads were closed already, so i started a new one. It may spare some time for you.

I have a virtual private server running Ubuntu 9.10 and got messages like this:
Code:
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
    LANGUAGE = (unset),
    LC_ALL = (unset),
    LANG = "en_US.UTF-8"
    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
To get rid of the messages I had to run this command:

Code:
# locale-gen en_US en_US.UTF-8 hu_HU hu_HU.UTF-8
then

Code:
# dpkg-reconfigure locales
The problem was solved. I didn't had to edit any files like /etc/environment
Hope it helps for you!

I found the solution here:
http://www.linuxquestions.org/questi...41#post3540541