The NiceMining pool has more than 1 000 000 000 hashes/second mining power in total!!!
That is dangerous for the coin, as it represents around 50% of the network hashing power (can result in 51% attack!)Please, if you are mining in that pool (specially if you are one of the big miners) you should switch to some other pool.
I suggest my pool:
pool.terahashers.comIt has some nice features like VARDIFF to make the most of your mining hardware.
No need to register.
Your username is your wallet address and the password can be anything.
sgminer -k darkcoin -o stratum+tcp://pool.terahashers.com:5010 -u <yourwalletaddress> -p xLet me know if you have any problem with my pool, so that I can solve them ASAP to give you the best mining experience.