| >setenv auto-boot? true
| >reset-all
| >
| >it just hangs with a gray screen.
| >
| >setenv auto-boot? false
| >reset-all
| >manually type just "boot"
| >it boots up fine

  Same here on a G4/400. I never managed to get it to autoboot
into NetBSD (gray screen with no visible progress), if instead I
drop into OF and type "boot", it works fine.

  That's ok for me as I don't use the machine as an unattended
server.

	mjl