Here is the omargpool failure: http://rpcace.solcoin.net/?108219

Check block 108213 in the middle with 640(!) transactions that piled up and next block after that took 3(!) hours when almost 80% of network hashrate went offline and the nice difficulty drop after that. Seriously miners you should spread out on the pools and configure failover, make use of the new Poolfinity pool and Solcoin team's own p2pool.