[syslinux] Memory upgrade breaks net boot (PXE + NFS Root)

[H. Peter Anvin]

Curtis Doty wrote:
> 
> Unfortunately, I've had similar results where memtest86+ failed to detect 
> any errors, but a specific memory stick was at fault. I'm only guessing it 
> was a combination of memory access with rapidly firing interrupts from the 
> network card or backplane during boot. In the end, the only way to 
> identify faulty DIMM was good ol' trial-and-error elimination testing.
> 

Given that this is happening over a range of machines I would guess 
memory bus overloading is probably the most likely cause.  Downclocking 
the memory might be an interesting experiment.

	-hpa