Tom,
> 2003-02-17 21:53  tgl
> 
> 	* src/backend/commands/async.c (REL7_3_STABLE): Async_NotifyHandler
> 	must save and restore ImmediateInterruptOK.  Fixes known problem
> 	with failure to respond to 'pg_ctl stop -m fast', and probable
> 	problems if SIGINT or SIGTERM arrives while processing a SIGUSR2
> 	interrupt that arrived while waiting for a new client query.
So ... if I had a PSQL terminal session open on a remote client, and
did:
pg_ctl -m fast stop
pg_ctl start
pg_ctl -m fast stop
... the second stop would fail?   Am I understanding correctly?
 Because that's the behavior I am observing.
-Josh