the installation(rpm -Uvh xorg*) was quite smooth except there were a few packages that have dependency problem, i manually solved them by downloading the latest version of those packages
the extra work i read from the maillist are the ld.so.conf and xfs service
since you've taken care of the ld.so.conf, just take a look at xfs
if it's not running, "/etc/init.d/xfs start" and try "startx" again
ps: i rarely know anything about X or lib, there's not much i can help
if you need more info, i suggest you check the maillist, this topic is kind of HOT recently
http://www.redhat.com/archives/fedor...ch/thread.html