I replaced the video card in an AMD64 pc with FC3-x86_64 with a new card (nVIDIA GeForce FX5200 replaced by a nVIDIA GeForce FX5700 LE) and used kudzu to remove the old adapter and install the new. (Kudzu reacted correctly at boot). As I do not like using gdm/rhgb I always configure for runlevel 3 and use 'startx'. Before using 'startx' I edited xorg.conf with the correct entries. This is for a LCD monitor using DVI and the 'nv' driver. However now 'startx' either remains at the black screen or progresses to the blue Gnome startup background (on which normally the Fedora splash screen appears with the changing icons before you see the panel, etc.) but then no Gnome desktop. I have checked the xorg log file in /var/log and other logs for any indication of video problems but everything appears OK. So I think something happened to the Gnome configuration somewhere. I see errors like the following: (Gnome-panel:3671): Gtk-WARNING **: cannot open display: :0.0 Any suggestions how to solve this. I really need the GUI at the moment. Alexander