Seems we have just about as many forks as we have pools..
http://Https://bltz.crunchharder.net is 99% sure we're on the right fork - we're actively in IRC and checking the other pools to ensure we're on the longest chain with the highest difficulty.
EDIT: To posted above, sorry, you're on a shorter/easier fork - block 667 diff 17 here right now.
If you delete all nodes and add only from first post, then delete database, which block do you see?
I have made it and see block
"blocks" : 671,
"connections" : 6,
"proxy" : "",
"difficulty" : 17.64194454,