That single ASIC hashing on slush is a huge blow to BFL and their customers investors.
How so? [serious question]
It's sort of a "proof of concept" having Avalon deploy one working unit so far, which is why I'm largely holding judgement on this issue until more units are in the hands of customers. But I don't think BFL has much to worry about until Avalon takes the lead with orders. Avalon just showed that they have a working product..so if BFL doesn't kick into gear and get units out the door soon, they're going to be in trouble.