Desktop Effect not working

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http://forums.fedoraforum.org – Iam new to Fedora. :rolleyes: Desktop effect is not working... Please help me... iam using fedora 11. and VGA compatible controller: nVidia Corporation GeForce 8400 GS (rev a1) current X11 - Xorg.conf file looks like this # Xorg configuration created by system-config-display Section "ServerLayout" Identifier "single head configuration" Screen 0 "Screen0" 0 0 InputDevice "Keyboard0" "CoreKeyboard" EndSection Section "InputDevice" # keyboard added by rhpxl Identifier "Keyboard0" Driver "kbd" Option "XkbModel" "pc105+inet" Option "XkbLayout" "us" EndSection Section "Monitor" Identifier "Monitor0" ModelName "LCD Panel 1680x1050" HorizSync 31.5 - 65.5 VertRefresh 56.0 - 65.0 Option "dpms" EndSection Section "Device" Identifier "Videocard0" Driver "vesa" EndSection Section "Screen" Identifier "Screen0" Device "Videocard0" Monitor "Monitor0" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection Section "Module" Load "dbe" Load "extmod" EndSection Section "Device" Option "XAANoOffscreenPixmaps" "true" Option "AllowGLXWithComposite" "true" Option "TripleBuffer" "true" Option "RenderAccel" "true" EndSection Section "Extensions" Option "Composite" "Enable" EndSection Section "Screen" Option "AddARGBGLXVisuals" "true" EndSection Section "ServerLayout" Option "AIGLX" "true" EndSection (HowTos)