Try using the latest update v0.8.5.4, it may solve your wallet problem.
I use it!
Same here on 0.8.5.4 version of wallet.
PoS is working but is showing 0 net weight. Wallet need some adjustments but the good thing is that is working.
Same here... No stakes. Used the Espers_v0.8.5.4_Patch-6_cleanbuild-qt, and sync all the blocks trough network.
same everywhere i guess but if you do getstakinginfo in debug you'll see the netweight, funny a recent release called neuron has the exact same issue
[edit]
win 10 X64 v0.8.5.4-Patch 6
11:17:30

getpeerinfo
11:17:31

[
{
"addr" : "[2001:0:34a4:e5e4:14d3:a13:b128:96ad]:22448",
"addrlocal" : "*",
"services" : "00000001",
"lastsend" : 1488799017,
"lastrecv" : 1488799018,
"bytessent" : 61367,
"bytesrecv" : 108332,
"conntime" : 1488798940,
"pingtime" : 0.12232600,
"version" : 60020,
"subver" : "/Espers:0.8.5.4/",
"inbound" : false,
"startingheight" : 649999,
"banscore" : 0,
"syncnode" : false
},
{
"addr" : "198.245.50.213:22448",
"addrlocal" : "*",
"services" : "00000001",
"lastsend" : 1488798974,
"lastrecv" : 1488799017,
"bytessent" : 1694,
"bytesrecv" : 6084,
"conntime" : 1488798973,
"pingtime" : 0.25969000,
"version" : 60020,
"subver" : "/Espers:0.8.5.4/",
"inbound" : false,
"startingheight" : 651232,
"banscore" : 0,
"syncnode" : true
},
{
"addr" : "85.145.32.75:22448",
"addrlocal" : "*",
"services" : "00000001",
"lastsend" : 1488799017,
"lastrecv" : 1488799017,
"bytessent" : 902,
"bytesrecv" : 13548,
"conntime" : 1488798974,
"pingtime" : 0.10427700,
"version" : 60020,
"subver" : "/Espers:0.8.5.4/",
"inbound" : false,
"startingheight" : 651232,
"banscore" : 0,
"syncnode" : false
},
{
"addr" : "137.74.33.98:22448",
"addrlocal" : "*",
"services" : "00000001",
"lastsend" : 1488798980,
"lastrecv" : 1488799016,
"bytessent" : 292,
"bytesrecv" : 959,
"conntime" : 1488798980,
"pingtime" : 0.19150900,
"version" : 60020,
"subver" : "/Espers:0.8.5.4/",
"inbound" : false,
"startingheight" : 651232,
"banscore" : 0,
"syncnode" : false
},
{
"addr" : "85.255.7.224:22448",
"addrlocal" : "*",
"services" : "00000001",
"lastsend" : 1488799017,
"lastrecv" : 1488799023,
"bytessent" : 353,
"bytesrecv" : 5248,
"conntime" : 1488798980,
"pingtime" : 5.72421600,
"version" : 60020,
"subver" : "/Espers:0.8.5.4/",
"inbound" : false,
"startingheight" : 651232,
"banscore" : 0,
"syncnode" : false
},
{
"addr" : "[2001:0:d58:bbbf:30fb:d293:e020:7631]:51405",
"addrlocal" : "*",
"services" : "00000001",
"lastsend" : 1488799040,
"lastrecv" : 1488799040,
"bytessent" : 2728,
"bytesrecv" : 237,
"conntime" : 1488799040,
"pingtime" : 0.24565300,
"version" : 60020,
"subver" : "/Espers:0.8.5.4/",
"inbound" : true,
"startingheight" : 651233,
"banscore" : 0,
"syncnode" : false
}
]