[marcmac]

Try this:

Remove your ~root/.cpan/CPAN/MyCongfig.pm (if you have one).

Then (as root)
perl -MCPAN -e 'install Digest::SHA1'
perl -MCPAN -e 'install HTML::Parser'

THen, replace your MyCOnfig.pm (if you have one) and you should be ok to build.