Example of working server:
http://91.197.162.132/info.php
Config is running on several servers with hosting sutes about 3 monthes.
The main condition is FreeBSD 7.0 64bit must be compilied with lib32 support.
Then, from ports installing: libtool15, autoconf262, automake110.
Then, installing all ports that dont need to be configured: gmake, freetype, freetype2, ImageMagick, gd, libxslt, curl.
Then you should install DA as usually in 2nd variant.
Then you should install MySQL5.0 from ports.
Then through "build" install in order: suPHP, php5-cgi, dovecot.
And then from ports install Exim.
That's all
That information seems enough for sysadmins.
Advantages:
1. Last versions of all SW.
2. Support more then 3Gb RAM and more then 4 CPU.
3. Increased operation speed. Usage of all power CPU 64bit (such as Intel, AMD), support SW developed especially for 64bit.