This coin is broken... well not broke but the difficulty re-targeting is messed up.

A huge amount of hash power will mine the coin then stop all at once. The difficulty gets stuck high. It also happened to boolberry. This problem is probably in MRO and all the other cryptonote coins.

Someone should figure out how to do re-targeting better. Improve the coin instead of a straight up copy and paste job.



EDIT: block time is 4 minutes. Everything is working fine. I assumed block time was 30 to 90 seconds.