I keep getting this error on Redhat 9

Jun 29 16:32:25 thor kernel: hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
Jun 29 16:32:25 thor kernel: hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
Jun 29 16:32:47 thor kernel: hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
Jun 29 16:32:47 thor kernel: hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
Jun 29 16:32:52 thor kernel: hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
Jun 29 16:32:52 thor kernel: hda: dma_intr: error=0x84 { DriveStatusError BadCRC }

I'm new to linux but this doesn't sound like a good thing. Any way to solve this? I tried swapping the cables for a known good one.

Grub.conf file
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/hda2
# initrd /initrd-version.img
#boot=/dev/hda
default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
title Red Hat Linux (2.4.20-8)
root (hd0,0)
kernel /vmlinuz-2.4.20-8 ro root=LABEL=/
initrd /initrd-2.4.20-8.img

And the Hardware I am running it on:
Redhat 9
Athlon 550 on FIC SD11 (old board laying around)
256MB PC133
Nvidia TNT
Netgear FA310tx
Maxtor 15GB HD

doing a quick search on Google.com/linux I found this.(3rd hit.)

http://www.redhat.com/archives/ext3-.../msg00059.html

just to be sure wou will probably want to run diag software from maxtor. It will tell you real quick if you have a bad drive.

I tried running maxtor utilities on it, every test came back ok. I even did a complete wipe for good measure.

nah, that could easily be just cable noise or something.
turn off dma or set a slower dma mode. i run into that
crap all the time. it could even just be another drive on
the same cable causing some trouble.
you can spend some time trying to find out the fastest
dma mode that the drive will work ok at, or lower your
computers bus speed.