Apache 2.0.40 Released
cliffwoolley writes "On August 7, the Apache Software Foundation was notified of a significant vulnerability that affects the Win32, OS/2, and Netware ports of Apache 2.0. It has the potential to allow an attacker to inflict serious damage to a server and/or reveal sensitive data on those platforms. To fix this vulnerability in addition to a number of cross-platform issues (a pair of path exposures and a number of bugs), Apache 2.0.40 has been released. It is considered the best currently available version of Apache, and all users are urged to upgrade."
PHP support for Apache 2.0.x is still marked as expirimental. Until that's changed, I can't even think of upgrading.