Over on my PhotoBlog I had some problems getting the fancy resize/(prev/next) AJAXy thing working. The documentation for the “Reflection” theme doesn’t mention you need this….just PHP5. The JSON support isn’t included by default until PHP5.2.
What you need to get it working on Centos without PHP5.2.
1) yum install php-devel
2) yum install php-pear
3) pear install json
4) add “extension=json.so” to /etc/php.ini
5) service httpd restart
6) You’re done.