The install scripts for apt-get can't seem to find perl and this error is also common.
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").
Nicholas A. Schembri
State College, PA USA