Anyone have any idea what's going on here:
http://blockchain.info/poolsWhen I looked at the pie chart just now, I see that 61% of the hashrate distribution is to "unknown." I've been watching this chart for the past 6 months or so and this is the first time that I've seen any slice on this graph exceed 50%. The "unknown" slice has been growing in spurts over the past several months though.
I hope this turns out to be anomalous or at least not primarily the work of a single party.