This may be a Win32-specific thing, or perhaps not, and may be relevant now that perl-5.8.1 is released. Usually one thinks there's binary compatibility between Perl subversions (eg, 5.8.0 and 5.8.1). However, I've found if I build mod_perl 2 on Win32 (as a dso) using 5.8.1, then it won't load under perl-5.8.0. One reason for this may be that, in modperl-2.0/src/modules/perl/mod_perl.c, a distinction is made for 5.8.1 based on a new feature in 5.8.1 concerning randomizing the order of hashes. In any case, if you upgrade from 5.8.0 to 5.8.1, you may also have to rebuild mod_perl and/or any xs-based related modules.
-- best regards, randy kobes
