Hello,
here is what I use:

PHP: 4.4.7 (Zend: 1.3.0)
MySQL 4.1.22-standard

Linux 2.6.9-55.0.2.EL

HTTP Server: Apache/1.3.37 (Unix) prxp_module/1.11.3 mod_auth_passthrough/1.8 mod_log_bytes/1.2 mod_bwlimited/1.4 PHP/4.4.7 FrontPage/5.0.2.2635.SR1.2 mod_ssl/2.8.28 OpenSSL/0.9.7a

hope it helps, because your contribution will help us.
Thanks
Michael