Bug#407538: Prevents etch netinstall

[Seth Mattinen]

I don't really feel like retyping the console, so here's a screenshot 
from my VNC session with the Xen HVM I was trying to do a netinstall of 
etch on to.

And in case it doesn't attach:
http://ninjamonkey.us/etch-netbase-hang.png
~Seth