A colleague is working on a 5.10 upgrade now, but since we have a heterogeneous network of 1000+ machines, it will take a little while. And naturally, he isn't just upgrading all the perl installs, he's building a system to do further upgrades in the future. So until that's working, I have to work with 8+ year old perls :|

Thanks very much for the Module::CoreList tip! That will be /very/ useful until that upgrade is finished.

I've been bitten once already by thinking something was "standard library" and then discovering it wasn't installed across all our machines. I'd gotten to the point where I was only prepared to believe something was standard if it was listed in the 1st edition Camel as such. With Module::CoreList I can check a bit more finely.