Strange behaviour of GRUB

[Ivan Ivanov]

Dear Colleages,

I am using Fedora Core 2 with GRUB Loader and I am
facing a problem with it. Every now and then when I
turn on my machine, expecting to see GRUB menu, I get
endless printing of "GRUB" on the screem like this

GRUB GRUB GRUB GRUB GRUB GRUB GRUB GRUB GRUB GRUB GRUB
GRUB GRUB GRUB GRUB GRUB GRUB GRUB GRUB GRUB .....

The problem does not appears always, there are times
when I use it normally. 
Up to now I fix this using a Linux rescue disk so that
I can boot somehow and then I reinstall grub with the
command:
grub-install /dev/hda

My machine has Fedora Core 2 and Windows 2000 on it
(which I haven't used for sevral months). The contents
of /boot/grub/grub.conf is

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making
changes to this file
# NOTICE:  You do not have a /boot partition.  This
means that
#          all kernel and initrd paths are relative to
/, eg.
#          root (hd0,0)
#          kernel /boot/vmlinuz-version ro
root=/dev/hda1
#          initrd /boot/initrd-version.img
#boot=/dev/hda
default=0
timeout=10
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
title Fedora Core (2.6.5-1.358)
        root (hd0,0)
        kernel /boot/vmlinuz-2.6.5-1.358 ro root=LABEL=/ rhgb
quiet
        initrd /boot/initrd-2.6.5-1.358.img
title Windows2000
        root (hd0,1)
        makeactive
        chainloader +1

and just for information my partitions as shown by
fdisk are:

   Device Boot      Start         End      Blocks   Id
 System
/dev/hda1               1        1275    10241406   83
 Linux
/dev/hda2   *        1407        3319    15366172+   7
 HPFS/NTFS
/dev/hda3            1276        1406     1052257+  82
 Linux swap
/dev/hda4            3320        4865    12418245    f
 W95 Ext'd (LBA)
/dev/hda5            3320        4865    12418213+  83
 Linux

Thank you very much in advance

Ivan Ivanov

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