When I do a fresh install of the development tree, firstboot still fails to properly run on my system. The X server comes up fine and there are no errors in the XFree86.1.log file, but firstboot still reports that it cannot open the :1 display.
Running firstboot by hand under the normal Gnome login (sudo firstboot) succeeds and lets me get the basic configuration completed.
System "tembo" specification: ASUS P5A-B mobo AMD K6-2 @333MHz ATI Rage XL (Mach64)/8MB KNE-T40 (tulip) IDE NIC Etherlink III (3c509) NIC (PCI) CMI8331 soundchip on mobo 320MB ram PS/2 keyboard and trackball