in reply to Arguements for upgrading from Perl 5.8
Enormously good reason to upgrade: Exceptions are much less broken.
Quick explanation: During stack unwinding when an exception was thrown, your exception might be clobbered from $@ (A simple eval somewhere in code called from DESTROY of an object can do the trick). That no longer happens with 5.14. This kind of error is among the worst to debug I've seen.