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?
Yes and no. It appears that there is a bug in the wallet that prevents staking until about 15 days, past the point when coins are fully mature. We will fix this by tomorrow night and release new wallets. The effective APR comes out to about 33% under these conditions. The fix will restore the full APR of 100%.
This bug affects everyone equally.