Why doesn Gallery work correctly on my RedHat 9.0 system?
As in Red Hat Linux versions since 8.0, the default web server is Apache 2. Apache 2.0 uses a totally different module API, making it necessary to rewrite all modules for this new version. Unfortunately, the PHP version that Red Hat 9.0 is distributed with has a very buggy interface with Apache 2.0. Some of these bugs have been fixed with the latest version of PHP. Please download the latest version from http://www.php.net/. See this forum post for information on how to compile PHP.