[autofs] lookup(program): lookup for foo failed

With RH 7.3 I could make /etc/auto.master like:

  /mnt    /etc/auto.mnt --timeout=60

and make an /etc/auto.mnt like:

  foo           -fstype=vfat            :/dev/hda1

and restart autofs to get the automounter to mount /dev/hda1 under
/mnt/foo if accessed. However with FC3 this simply does not work. I get:

  May 14 20:44:00 quark automount[9844]: lookup(program): lookup for foo failed
  May 14 20:44:00 quark automount[9844]: failed to mount /mnt/foo

What's changed? How does one use autofs now?

Thanks,
Mike