Don't Talk, Just Daven

Have you ever thought about the correlation between shuls that have signs up warning or forbidding people to talk during davening and the continued proliferation of noise?

I think there is a inverse relationship in that congregations that are quiet (and respectful) have no signs ups, whereas the ones that have to shush people or stop the Torah reading in the middle, have LOTS of signs up or notices in the shul bulletins.

What can we learn from this? I have my own conclusions.