replication in mysql? Well, kind of random, I remember @work people not getting it right for 3 years... because they forgot to read the documentation.

We may have too much clueless developer in the wild, imitating for security.

Like the more linux is spreading, the more the sect of the post devil spread, you recognize them with their dark incatation: chmod 777 (the number of the post devil) and chown root:root.