see the How to
"Fedora 9 (F9) and ATI ( fglrx ) with working OpenGL!" http://forums.fedoraforum.org/showthread.php?t=189227
and in particular the last posts .
ati is supposed to now support the NEW xorg in fedora 9 , with no need to downgrade xorg to the one in ferdoa 8
Running Arch ,OpenSUSE 11.4-64bit & Scientific Linux 6.1-64bit ( fedora 4 to 11)
My Celestia Downloads