logging settings

On Postgres 7.4.1

I've been experiencing some strangeness with the logging settings in
postgresql.conf.

I turned on statement logging (and duration), issued a "pg_ctl reload"
and got it working (logging to sys log and standard out). Now however,
when i try to turn it off, it won't turn off, using the same procedure.
I've now commented out all the lines related to logging, but it's still
logging.

Is it possible that this is related to connection pooling? Does each
connection hold these settings, such that a reload of the configuration
file only affects new connections, not existing ones?

Any help, much appreciated.

Thanks -

Mott