in reply to CPAN Useless on OS X
That's really puzzling. I have been using Perl and CPAN on OSX from 10.0 through 10.8.mumble.
I installed my own edition of Perl in /usr/local/bin using sudo (which is how you are supposed to do privileged access), and my CPAN configuration is set to do "sudo *mumble*" for the install actions. It has always worked smoothly.