Thank you all for your replies.

hippo: I failed to install the Test::* modules on the newer machine, as I mentioned. It is the same (busy...) sysadmin.

thanos: I also figured that the module may work on an older Perl version, but how do I get to install it? it refuses to install, claiming it needs v5.10.0

marto: I typed in these 'o conf' commands, but there was to change. Test::More failes to install because it needs Test::Harness, and vice versa. I also failed to install App::cpanminus for the same reason - it quits the installation becasue it can't find Test::Harness in @INC