MAC SSH Raspberry Pi perl:warning:Falling back to the standard locale ("C").

If It happens as using SSH, this is a fault on the SSH client, not the RPi. For example using an Ubuntu machine as the SSH client would cause this problem.

To the "fix this" ssh problem, edit the file/etc/ssh/ssh_config on the SSH client (not the RPi) and remove the line
Sendenv LANG lc_*

This is stops the client sending invalid locale information to the RPi.

The Ssh_config path under Mac is/etc/ssh_config, and the sendenv LANG lc_* Line is commented out

from:http://www.raspberrypi.org/phpbb3/viewtopic.php?f=50&t=11870