I just did start mining.
This is weird tho "2016-Mar-09 05:04:52.551868 WARNING [node_server] [80.2.75.167:4460 OUT] Exception in connectionHandler: TcpConnection::read, WSAGetOverlappedResult failed, result=10054, An existing connection was forcibly closed by the remote host."
The difficulty is fine, block height is increasing. I'm trying to understand the error you're getting, might be a node under too much stress.
