Seconded. It might take a couple of days to get an answer but I always get one. As mentioned above I took a look at the first few pages of your lates comments

Seconded. It might take a couple of days to get an answer but I always get one. As mentioned above I took a look at the first few pages of your lates comments and I too felt there might be something in your case. That said I also do expect HN to have scripts to detect serial downvoters and automatic voting.