All I have noticed that when writing a simple form in CGI.pm when you submit the form the values are passed onto the URL Bar of the browser.

Compare this form to the one you have

#!/usr/bin/perl -w  
use CGI ':all';
print
    header,
    start_html,
    start_form,
    textarea(-name => 1),
    submit,
    end_form,
    end_html;
__END__
[download]

This is the default form action.