The blockchain is stored across different computers across the network. This ring error is due to only having one pool up, and is causing really bad payout issues. I'm in the process of putting up another pool to solve this issue. I've also brought down the other pool so that I can make sure we have the fartcoins to pay everyone if we have to roll back to that block again.

EDIT: oh, it's stored in .fartcoin in your home folder if you're looking for the local database.