This is a long shot, but this worked for me.
I run the daemon with -listen=0, so it does not accept incoming connections.. just downloads the blockchain from the seed server..
cd in the folder containing the executable (windows or ubuntu) and
darkcoin-qt -reindex
darkcoind -reindex
Or delete everything in the darkcoin folder
except the wallet.datSome masternodes are destroying whole network. There are so many block chains.