I was trying to configure Apache 2.x to listen on non-standard ports (ex. 8001) and was getting "permission denied ... unable to open logs" errors. This was on a Red Hat Enterprise Linux 4 ES server that I had just built, and a fresh install of httpd using up2date. Strangely, if Apache was configured to listen on port 80, it would start with no problems.
Apparently, if you do not disable SELinux in your kickstart file, it is enabled by default. SELinux will not allow httpd to start on the high ports I was specifying. Since I currently do not use SELinux in my environment, I have no qualms disabling it. To disable it (RHEL4), I modified /etc/sysconfig/selinux and configured "SELINUX=disabled". This requires a reboot to take effect.