RE: Silent corruption on AMD64

From: On Behalf Of Aaron Lehmann
> I've been able to narrow it down to the Realtek Ethernet card. I can't
> reproduce the problem using onboard Ethernet, whereas the Realtek card
> causes trouble in any slot. However, I still don't know whether it's a
> hardware or software issue, or whether it's caused directly or
> indirectly by the Realtek card.

I had a similar issue recently:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=223216

I recommend trying Doug Ledford's memtest script:
http://people.redhat.com/dledford/memtest.html

It helped me prove the issue was the hardware and not something else.

..Stu