Chris has a point there, about checksumming.

I have no problems with the 17.31 kernel on an amd64 domU. And dom0 is running 
the hardy kernel (-16.xx), also amd64. I'm using debians hypervisor 
(3.2.0-3~bpo4+2).
And I DO have checksumming offload off (as described using 
/etc/network/interfaces). It was necessary with previous kernels and I didn't 
even think about it.

There is a difference between checksum offload on and off. With offload OFF I 
have a througput (domU->dom0) 18M/s; with offload on it is only 12 (using an 
36M file).
>From domU to domU (same host) it doesn't matter whether offload is on or off.

But still no BUG.

-- 
xen guest  kernel bug:  'kernel BUG at 
/build/buildd/linux-2.6.24/debian/build/custom-source-xen/drivers/xen/netfront/netfront.c:785'
https://bugs.launchpad.net/bugs/218126
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