Not sure why the Ben exhibited such a long turn-around time. It should
actually be faster than a PC with atusb. Maybe it's because of latency
introduced by other sources.
The boot loader currently uses the protocol switch intended for the
application. This makes it too big to fit in the very limiting
constraints the ATmega168 poses - and there's not even cryptographic
authentication yet. We'll have to dumb it down quite a bit.