As you can see from our EOL page:
The EOL for Snort 184.108.40.206 is approaching in a couple days. From our download statistics, the percentage of people is pretty small.
Please try and update your engines this week to 220.127.116.11, the current version. We also look forward to the release of 18.104.22.168 in the coming weeks, so for those of you still on 22.214.171.124, the EOL for 126.96.36.199 will be the release of 188.8.131.52 + 90 days (as a reminder).
So, 184.108.40.206 users, your EOL is coming too, and there are tens of thousands of you on that version. It's upgrade time!