The 2012 bug was a bad interaction between Java and thread locking in the Linux kernel. It affected MySQL as well. The 2009 bug was in the Linux kernel, in the

The 2012 bug was a bad interaction between Java and thread locking in the Linux kernel. It affected MySQL as well. The 2009 bug was in the Linux kernel, in the logging code. The 2016 bug I mentioned was in Cloudflare's proprietary code and only had a big impact because so many websites use Cloudflare. There are zillions of other smaller leap second related bugs, these are only three of the most visible. (btw, the word "bigotry" has a real meaning and this isn't it.)