I would like to add an argument not to upgrade too fast. I am testing a 5.14 installation and found some not working modules:
UNIVERSAL->import is deprecated and will be removed in a future perl a
+t C:/Perl.514/site/lib/POE/Component/Client/TCPMulti.pm line 30
BEGIN failed--compilation aborted at C:/Perl.514/site/lib/POE/Componen
+t/Client/TCPMulti.pm line 30.
So do a complete testing and allow You some time to checkout all your scripts and apps as this might save you a lot of work later. It was already said above, never change a running system without need. Unsupported software is a big need - as chromatic explained - but update carefully
And it came to pass that in time the Great God Om spake unto Brutha, the Chosen One: "Psst!"
(Terry Pratchett, Small Gods)