mod_perl adds those last directories for you automatically.
It should be the configuration directory, and the configuration directory
with /lib/perl attached. There's no harm if you don't have those
directories. I use that to hold my mod_perl-only modules for handlers.
Thanks for the prompt reply. In fact, the problem that let me to suspect somthing funny in that was all due to me forgetting that mod_perl has data persistance. Another reason for -w and use strict.