GRUB Boot Fails on P3 without Keyboard

[Rebecca R Hepper seagate com]

My RH9 P3 systems fail to boot GRUB while the P4 systems boot without any
problems.  When the P3 tries to boot, it hangs before the RedHat Linux
interactive setup at a line that says "apm: BIOS version 1.2 Flags 0x03
(Driver version 1.16)".  If a keyboard is attached to the P3, it will boot
without issues but the system must boot without a keyboard.  The P3 will
boot LILO without a keyboard attached.  Any idea how to get GRUB to boot
without a keyboard on the P3's?

Thanks!

The grub-0.93-4 RPM is installed.

This is my grub.conf:
default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
title Red Hat Linux (2.4.20-30.9smp)
      root (hd0,0)
      kernel /vmlinuz-2.4.20-30.9smp ro root=LABEL=/
      initrd /initrd-2.4.20-30.9smp.img
title Red Hat Linux-up (2.4.20-30.9)
      root (hd0,0)
      kernel /vmlinuz-2.4.20-30.9 ro root=LABEL=/
      initrd /initrd-2.4.20-30.9.img

This is partioning info from 'dh -h':
Filesystem            Size  Used Avail Use% Mounted on
/dev/hda9             244M  104M  127M  46% /
/dev/hda1              99M   15M   80M  16% /boot
/dev/hda2             3.9G   36M  3.7G   1% /home
none                  250M     0  250M   0% /dev/shm
/dev/hda6             3.9G  1.6G  2.2G  42% /usr
/dev/hda3             3.9G   76M  3.6G   3% /usr/local
/dev/hda5              21G   80M   20G   1% /var