I think i fond the problem
danbis pool is ( involutary i belive ) performing a sucessfully a 51% atack
i'm monitoring the block exlorer everithing goes fine, until a bunch of blocks from danbis pool arrive making every block orphan
I have confirmed blocks , and next minute they are orphan
I'm force to stop mining until this is fixed
its very sad whats hapening
If it is true then it proves why master node is a bad idea.