"Martin A. Brooks" <martin@antibodymx.net> writes:
> I don't explicitly set that parameter in my config. The full config
> file can be found at http://www.antibodymx.net/postgresql.conf
You've got log_duration on; that overrides log_min_duration_statement
and forces statement durations to always be logged.
(No, I'm not quite sure why we have both variables ...)
regards, tom lane