Still i think it's an interesting topic, since i have various problems using utf8 with our system.
For example, using mod_Perl, some utf-8 strings just loose their utf-8 flag. I can't do a thing about it, it's compiled and cached in apache's mod perl.
Seems to have to deal with this or this
I wonder if there are more issues (And if possible: Solutions!) reported by others who try to have there programme running mod_Perl and utf-8 data.

Becouse of the first mentioned issue, we have to use PerlModule ModPerl::PerlRun in stead of the preferred PerlModule ModPerl::Registry , since sometimes good formed unicoded data comes out cripple