Diff rising now,

{
"blocks" : 54314,
"currentblocksize" : 1000,
"currentblocktx" : 0,
"difficulty" : 6.03425257,
"errors" : "",
"generate" : false,
"genproclimit" : -1,
"hashespersec" : 0,
"networkhashps" : 19936394535,
"pooledtx" : 0,
"testnet" : false
}
edit - solomining still working well for me.