this is a new one on me, I have never seen someone complain that they did _not_ have a problem before...
the issue is that the mysql_set_charset() function that is used on the connection fie to allow the use of UTF-8 characters in the database is not available in PHP versions prior to 5.2.3 (I misspoke in my previous replay that it was the MySQL Version, it is actually the PHP Version, I will update that.)
function.mysql-set-charset.php
I will aslo contact the documentation to have the system requirements updated.