Building mod_perl 2.0.5

Hi,

I'm trying to upgrade some 64-bit Linux servers and though I'd upgrade Perl as 
well.  I've built the latest Apache (2.0.21), Perl (5.14.2) and mod_perl 
(2.0.5),  but mod_perl fails three tests: 
api/request_rec
filter/out_str_reverse
err_headers_out

When I went ahead and installed this on a test server, some stuff worked but 
some custom authentication handlers failed.

The last time I built everything from source I used Perl 5.10.1 and mod_perl 
2.0.4, I believe.  Is there a recommended version of Perl to use  when 
building mod_perl?

Thanks,
Dan