Hm. When I first opened 4.0.1, everything synced and after 24 hours I staked a whole bunch of blocks. The staking then suddenly stopped on 7/2, and the wallet wouldn't sync. I updated to 4.0.3, and now am synced up, but still have not seen a single POS block. I thought there would be shorter staking times in the big update. I should be getting some blocks right?