ide dma timeout error, linux 2.4.9, PIIX4 Ultra 100

Dear Andre and others:
I recently installed RedHat's 2.4.9-31 on my 1Ghz/256MB Dell Inspiron 8000. Now a week or so later, I'm noticing dma errors in my messages file and my disk is having FS problems. I'm really hope this a software issue and that my disk isn't hosed. What can I do? I've appended as much pertinent info as I can think of, but please let me know if you need more.

I am not on the linux-kernel mailing list, so please cc me when replying.

TIA,
-Andrew Miller

=================Excerpts from: /var/log/messages============================
kernel: Linux version 2.4.9-31 ([email protected]) (gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-98)) #1 Tue Feb 26 07:11:02 EST 2002
...
kernel: Kernel command line: auto BOOT_IMAGE=linux ro root=302 BOOT_FILE=/boot/vmlinuz-2.4.9-31
...
kernel: PCI: PCI BIOS revision 2.10 entry at 0xfc06e, last bus=8
kernel: PCI: Using configuration type 1
kernel: PCI: Probing PCI hardware
kernel: Unknown bridge resource 2: assuming transparent
kernel: Unknown bridge resource 2: assuming transparent
kernel: PCI: Using IRQ router PIIX [8086/244c] at 00:1f.0
...

kernel: Uniform Multi-Platform E-IDE driver Revision: 6.31
kernel: ide: Assuming 33MHz PCI bus speed for PIO modes; override with idebus=xx
kernel: PIIX4: IDE controller on PCI bus 00 dev f9
kernel: PIIX4: chipset revision 3
kernel: PIIX4: not 100%% native mode: will probe irqs later
kernel:     ide0: BM-DMA at 0xbfa0-0xbfa7, BIOS settings: hda:DMA, hdb:DMA
kernel: hda: IBM-DJSA-232, ATA DISK drive
kernel: hdb: TOSHIBA DVD-ROM SD-C2502, ATAPI CD/DVD-ROM drive
kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
kernel: blk: queue c0352660, I/O limit 4095Mb (mask 0xffffffff)
kernel: blk: queue c0352660, I/O limit 4095Mb (mask 0xffffffff)
kernel: hda: 62506080 sectors (32003 MB) w/1874KiB Cache, CHS=3890/255/63, UDMA(66)
kernel: Partition check:
kernel:  hda: hda1 hda2 hda3 < hda5 hda6 hda7 >

...
fsck: /: clean, 20163/78624 files, 220017/313267 blocks
fsck: /usr
fsck: contains a file system with errors, check forced.
fsck: /usr: 119584/704512 files (2.6% non-contiguous), 755987/1407687 blocks
fsck: /var: clean, 1139/64256 files, 93985/257008 blocks
rc.sysinit: Checking filesystems succeeded
...
kernel: hda: timeout waiting for DMA
kernel: ide_dmaproc: chipset supported ide_dma_timeout func only: 14
kernel: blk: queue c0352660, I/O limit 4095Mb (mask 0xffffffff)
kernel: hda: status error: status=0x58 { DriveReady SeekComplete DataRequest }
kernel: hda: drive not ready for command
kernel: blk: queue c0352660, I/O limit 4095Mb (mask 0xffffffff)
...
kernel: EXT2-fs error (device ide0(3,5)): ext2_check_page: bad entry in directory #475434: directory entry across blocks - offset=0, inode=1074324436, rec_len=59264, name_len=25
kernel: hda: status error: status=0x58 { DriveReady SeekComplete DataRequest }
kernel: hda: drive not ready for command
kernel: hdb: ATAPI 24X DVD-ROM drive, 128kB Cache, UDMA(33)
kernel: Uniform CD-ROM driver Revision: 3.12

...[By now system had come up, but later, while using the machine, I got:]...

kernel: hda: timeout waiting for DMA
kernel: ide_dmaproc: chipset supported ide_dma_timeout func only: 14
kernel: blk: queue c0352660, I/O limit 4095Mb (mask 0xffffffff)
kernel: hda: status timeout: status=0xd0 { Busy }
kernel: hdb: DMA disabled
kernel: hda: drive not ready for command

================== hdparm -iv /dev/hda ========================== /dev/hda:

 multcount    =  0 (off)
 I/O support  =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 nowerr       =  0 (off)
 readonly     =  0 (off)
 readahead    =  8 (on)

geometry = 3890/255/63, sectors = 62506080, start = 0

Model=IBM-DJSA-232, FwRev=JS8OAD0A, SerialNo=48W48LR7370 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 BuffType=DualPortCache, BuffSize=1874kB, MaxMultSect=16, MultSect=off CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=62506080 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 *udma4

=================== /proc/ide/piix ==============================

Intel PIIX4 Ultra 100 Chipset.
--------------- Primary Channel ---------------- Secondary Channel -------------
enabled enabled
--------------- drive0 --------- drive1 -------- drive0 ---------- drive1 ------

DMA enabled:    yes              no              no                no
UDMA enabled:   yes              yes             no                no
UDMA enabled:   4                4               X                 X

UDMA
DMA
PIO