So the main piece in the unexchanged (and part of the reason the earnings for today have bounced around a bit), is one of our exchanges (coinmarket.io) has been down for 2-3 days.  So a bunch of coins (smartcoin, karmacoin, reddcoin, penguincoin) have been sitting on the exchange, and have been unable to get exchanged.  Since then, smartcoin has been added to Cryptsy, and we originally added the smartcoin we had mined with the expected exchange rate (added to balance).  But since coinmarket.io has been locked (and our coins are over there), our scripts started pulling prices from Cryptsy (lower than coinmarket - and probably more correct since they're more recent), and the expected earnings for those coins are lower.  Since we recorded them a few days ago at a higher value, and now (today, a tiny bit yesterday) are recording them at a lower value, our "earnings" for today suffered.  Essentially its just a bad way of reading/recording these stats, but its what we've got for now...