Staking not work? On my Arcoshi v2.0.0.0 I see:

getstakinginfo
{
"enabled" : true,
"staking" : true,
"errors" : "",
"currentblocksize" : 1000,
"currentblocktx" : 0,
"pooledtx" : 0,
"difficulty" : 0.00037145,
"search-interval" : 1,
"weight" : 323276000,
"netstakeweight" : 21448,
"expectedtime" : 0
}
Means, client show stake in 0 second but run few hours and nothing.