Dave, Tushar N wrote:
> While I continue analyzing the dump , can you try setting pci=nommconf and
> boot the kernel to see of it makes any difference.

Tested now. I detect no difference. 
Kernel log available here: http://bjorn.haxx.se/e1000/nommconf-kern.log.bz2

> Also this could be an issue with 64bit system only if you have 32 bit kernel
> live cd it's worth trying it.

Unfortunately this machine lives in a remote data center so I have limited 
physical access to it. 

It certainly seems to be a 64-bit issue. It started happening when increasing 
RAM from 2 to 6 GB, the same as others have reported. I have also tried setting 
/sys/module/e1000/parameters/ignore_64bit_dma to 1 but it makes no difference.

-- 
Björn

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