pbl installing Firefox

[Raphael Marmier <raphael@xxxxxxxxxxx>]

trying to install Firefox from port, it fails complaining p5-XML::Parser 
 is not installed.

dragonfly# make install
===>  Installing for p5-XML-Parser-2.34_1
===>   p5-XML-Parser-2.34_1 depends on file: /usr/local/bin/perl5.8.6 - 
found
===>   p5-XML-Parser-2.34_1 depends on shared library: expat.5 - found
===>   Generating temporary packing list
===>  Checking if textproc/p5-XML-Parser already installed
Installing 
/usr/local/lib/perl5/site_perl/5.8.6/mach/auto/XML/Parser/Expat/Expat.so

<snip>

/usr/local/lib/perl5/5.8.6/man/man3/XML::Parser::Style::Stream.3
Writing /usr/local/lib/perl5/site_perl/5.8.6/mach/auto/XML/Parser/.packlist
===>   Compressing manual pages for p5-XML-Parser-2.34_1
===>   Registering installation for p5-XML-Parser-2.34_1
dragonfly# perl
use XML::Parser;
Can't locate XML/Parser.pm in @INC (@INC contains: 
/usr/local/lib/perl5/site_perl/5.005/i386-dragonfly /usr/local/lib/perl5
BEGIN failed--compilation aborted at - line 2.
dragonfly#

I can notice it is looking in the wrong site-perl. How do we fix that, 
if possible permanently?

Raphael