Actually I fibbed when I said it was ONLY running a webserver ... I am also running dns, proxy, dhcp server but all in small footprints on an old 20MB HDD ... i am essentially using this box as a server for my home network ... the machine does not even have a reliable video card! I need space for logs and my perl scripts that I will be testing on that server. Plus I am also running apache on it as I need the mod_perl environ. for the stuff i am testing.
Your point about the core modules dependencies are very prudent and that was my worry when I was thinking of a way to cut the perl distrib size down.
i might be able to get away with the find example given above ... and run it hard for a few days to make sure that every path is run and then check the access times.