Based on what I've read, they did implement something that was supposed to help vs ASIC bombing. However, someone apparently hit the pool yesterday until the rolling average was blown sky high, then left. The average calculation wound up swinging hard the other direction once the blocks started moving again, driving the difficulty down to 3 or lower for a short while. It's now on the rebound again, and has risen to a point where no new blocks have been found with the current hashrate of the network.


EDIT: blockchain at present. http://www.cryptocoinexplorer.com:3750/chain/Terracoin?count=32