Description of problem: I write and maintain tests for WebGUI, and after upgrading my laptop (running FC5) on June 17th I noticed a huge slowdown in performance in the tests. From the list of upgraded packages, I traced it down to perl itself. Here's data before and after a downgrade back to perl-5.8.8-4: [colink@redwall t]$ rpm -qf /usr/bin/prove perl-5.8.8-5 [colink@redwall t]$ prove --timer i18