We are not sure what happened with Terracoin but all we can say it was not handled great.
No warning to services using it, just a webpage update, not even a forum thread for discussing the issue and helping others resolve it.
So our current status as of updating is: no transactions are confirming - despite using the latest git tree.
Who writes terracoin ?, is there a thread for this discussion already ?
The price was high enough that it was stupid profitable for a very short time.. some ASIC people point their guns at it and blow up the difficulty to 165k.. now it is only 55% as profitable as BTC to mine.