If you start getting warnings that perl failed to set locale that didn't happen on earlier versions of the kernel I know how to fix that. First you have to have everything correct in /etc/locale.conf. If that's the case, add to your ~/.bash_profile file source /etc/locale.conf then save the edit and do source ~/.bash_profile then run your perl application like maybe cpanplus or irssi and if everything works on your system like it does on my system you won't get those warnings again.
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