Last days we changed our host and now both of them are working,but the DNS has not resolve over. But today,when i go to see my keyword position, all of them down, last day they are at the first page on google,but today i can not find them.And use the seoquake we could found that our indexed pages down too,from 5000 pages to 4000 pages,just use several days. So i'm very sad,but i do not know why.Anyone can tell me?