corruption with A7A266+200GB disk?

[steveb]

I just got a new 200GB disk (WDC WD2000JB) for my home machine (Asus A7A266,
Ali chipset). I put some partitions on it like so:
  hda1:   100MB - /boot
  hda2:  8192MB - /
  hda3:  1024MB - swap
  hda4:  the rest (about 190GB I guess) - /home

I find that when I mkfs on /home, I get massive filesystem corruption on /
When I fsck / (and restore the deleted files) I get massive filesystem corruption on /home. Luckily all my real data is still on my old disk...

I reduced the size of /home to 40GB and everything was fine.
I see the same behaviour with both 2.6.0test3 and 2.4.22.
My guess is that writes to very high numbered blocks are wrapping round
to lower numbered blocks in some way.

so...anyone else seen this? Is it a known driver problem?
Or is it a hardware issue?
Anyone care to suggest stuff to try? The contents of the disk are toast
(pretty much) so I can do destructive tests if it'll help...

Output from lspci looks like this:
  00:00.0 Host bridge: ALi Corporation M1647 Northbridge [MAGiK 1 / MobileMAGiK 1] (rev 04)
  00:01.0 PCI bridge: ALi Corporation PCI to AGP Controller
  00:02.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
  00:04.0 IDE interface: ALi Corporation M5229 IDE (rev c4)
  00:05.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 10)
  00:06.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
  00:07.0 ISA bridge: ALi Corporation M1533 PCI to ISA Bridge [Aladdin IV]
  00:0a.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 0c)
  00:0b.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 0c)
  00:0d.0 Multimedia audio controller: Ensoniq 5880 AudioPCI (rev 02)
  00:11.0 Bridge: ALi Corporation M7101 PMU
  01:00.0 VGA compatible controller: ATI Technologies Inc Rage 128 PF/PRO AGP 4x TMDS

Thanks in advance,

Steve Bennett
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