difficulty went up again 
{
"blocks" : 135017,
"currentblocksize" : 0,
"currentblocktx" : 0,
"difficulty" : 572.18513910,
"errors" : "",
"generate" : false,
"genproclimit" : -1,
"hashespersec" : 0,
"pooledtx" : 0,
"testnet" : false
}