Solo Mining, not detecting any new blocks.

"blocks" : 879,
"currentblocksize" : 1000,
"currentblocktx" : 0,
"difficulty" : 228.18345030,
"errors" : "",
"generate" : false,
"genproclimit" : -1,
"hashespersec" : 0,
"pooledtx" : 0,
"testnet" : false