Fedora 13 uses GNOME as Default Desktop(Window Manager) although you can select KDE(K-Desktop Environment) in the beginning at the time of installation.In second case,you can install KDE later(After installing fedora 13) from the shell/terminal/command-line or in graphical interface.KDE(K-Desktop Environment) 4.5 RC3 has just released on July 26 2010.KDE is a very popular desktop environment,it’s very …