in reply to Roll Call - How new is your Perl?
Official Answer: it depends.
My work laptop runs Perl under Cygwin which runs v5.14.2. Our production systems run Perl ranging from stone tablets (perls from oysters?) to a locally home grown Perl "distro" configured at 5.10.x (not sure about the x) and no two seem to be the same.
I'm currently trying to mint my own Perl package for deployment so I can write stuff on my laptop and have a HOPE of having it run on the production systems.