I have just installed FC6, and when i run "desktop-effects" in command line, I got the reply "desktop effects could not be enabled". and the code is [root@localhost ~]# desktop-effects
gnome-window-decorator: Screen 0 on display ":0.0" already has a decoration manager; try using the --replace option to replace the current decoration manager.
compiz: GLX_SGIX_fbconfig is missing
compiz: Failed to manage screen: 0
compiz: No managable screens found on display :0.0
i am new to linux, anyone got some ideas? thanx