It shipped with Linux 2.6 , GNOME 2.6 , KDE 3.2.2 , and SELinux XFree86 was replaced by the newer X.org , a merger of the previous official X11R6 release , which additionally included a number of updates to Xrender , Xft , Xcursor , fontconfig libraries , and other significant improvements . It shipped with Linux 2.6 , GNOME 2.6 , KDE 3.2 , and SELinux ( SELinux was disabled by default due to concerns that it radically altered the way that Fedora Core ran ) . XFree86 was replaced by the newer X.org , a merger of the previous official X11R6 release , which additionally included a number of updates to Xrender , Xft , Xcursor , fontconfig libraries , and other significant improvements .