How the heck did you install WWW::Mechanize? It' looks like a botched install. Admit it ... you just copied it over and manually mucked @INC, didn't you? I see /usr/local/lib/perl5/site_perl/5.8.8/WWW - which is bad. That should be /usr/local/lib/perl5/site_perl/5.8.8. I would recommend that you remove WWW::Mechanize in the reverse order of the botched install and then read over A Guide to Installing Modules.