Hi, I have Installed GSU 6.4 under wine it works but at dead slow space. No Crashes are observed. Save Load functions OK 2d Gfx save OK No functionality glitches are observed on Limited Test Conducted. Kubuntu, wine 1.1.2, nvidia ge4 440 GO Latest Driver from nvidia. OpenGL works fine as far as Linux desktop is concerned. When I run Sketchup the CPU utilization is almost 100%. On same machine in windows partition GSU runs very nicely with snappy respose. Can Somebody Guide me in this regard. Thanks and Best Regards. R. S. Patil The xorg.conf is as Follows. (Manually edited when Blank Screen Problem Faced) # nvidia-xconfig: X configuration file generated by nvidia-xconfig # nvidia-xconfig: version 1.0 (buildmeister@builder57) Wed Jul 2 12:30:48 PDT 2008 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" EndSection Section "Files" RgbPath "/usr/X11R6/lib/X11/rgb" EndSection Section "Module" Load "dbe" Load "extmod" Load "type1" Load "freetype" Load "glx" EndSection Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "keyboard" EndSection Section "Monitor" Identifier "Monitor0" VendorName "Unknown" ModelName "Unknown" HorizSync 30.0 - 110.0 VertRefresh 50.0 - 150.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" Option "NoLogo" "False" Option "RenderAccel" "True" Option "UseDisplayDevice" "DFP" Option "AlloGLXWithComposit" "True" EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "AddARGBGlxVisuals" "True" SubSection "Display" Depth 24 # Modes "1400x1050" "1280x1024" "1024x768" "800x600" "640x480" Modes "1400x1050" EndSubSection EndSection