Thanks for reporting.

The trouble is that woodcutters are withholding blocks.  There are a couple of large miners engaged in a war of attrition to get ahold of all the new LOG.  The difficulty has been going up and down by a factor of four and periodically a large reorg comes through.   

Unfortunately there is little we can do except wait and add more hashpower to bolster the nominally operating network. 

On the plus side, all transactions are going through and there's been no evidence of doublespend or DDOS.