mrtg nao roda - Can't locate MRTG_lib.pm

eu fiz a conf com um tutorial do Augusto da br-linux.org :

http://brlinux.linuxsecurity.com.br/...is/001627.html


-- o erro q da quando tento executar essa conf --
root@skynet:/home/mrtg# mrtg mrtg.conf
Can't locate MRTG_lib.pm in @INC (@INC contains: /usr/local/bin/../lib/mrtg2 /usr/local/bin /usr/lib/perl5/5.8.6/i486-linux /usr/lib/perl5/5.8.6 /usr/lib/perl5/site_perl/5.8.6/i486-linux /usr/lib/perl5/site_perl/5.8.6 /usr/lib/perl5/site_perl .) at /usr/local/bin/mrtg line 85.
BEGIN failed--compilation aborted at /usr/local/bin/mrtg line 85.
root@skynet:/home/mrtg#
-- o erro q da quando tento executar essa conf --

root@skynet:/usr/local/src/mrtg-2.12.2/doc# locate MRTG_lib.pm
/usr/local/src/mrtg-2.12.2/lib/mrtg2/MRTG_lib.pm

eu procurei pelo arquivo ele existe na pasta principal do mrtg na q eu usei pra instalar

eu tenho q fazer copia dele em algum lugar?

root@skynet:/usr/local/src/mrtg-2.12.2/doc# whereis perl
perl: /usr/bin/perl /usr/man/man1/perl.1.gz /usr/share/man/man1/perl.1.gz
root@skynet:/usr/local/src/mrtg-2.12.2/doc#


soh pra constar o perl ta instalado direitinho..