ERROR: Conditional NOTIFY is not implemented

I have a set of rules that worked in 7.0.3 for async notification. Those
same set of rules don't seem to be working under 7.1.2. The rules look
like this.

CREATE RULE CONFIG_CHNG AS ON INSERT TO gs_config DO (NOTIFY CONFIG_CHANGE);
CREATE RULE CONFIG_CHNG AS ON UPDATE TO gs_config DO (NOTIFY CONFIG_CHANGE);
CREATE RULE CONFIG_CHNG AS ON DELETE TO gs_config DO (NOTIFY CONFIG_CHANGE);

Here is a look at what my session looks like.

bash# psql config
Welcome to psql, the PostgreSQL interactive terminal.

Type: \copyright for distribution terms
\h for help with SQL commands
\? for help on internal slash commands
\g or terminate with semicolon to execute query
\q to quit

config=# insert into gs_config values ('Life','42');
INSERT 18842 1
config=# update gs_config set config_value='0' where config_name='Life';
ERROR: Conditional NOTIFY is not implemented
config=# delete from gs_config where config_name='Life';
ERROR: Conditional NOTIFY is not implemented
config=# \q

Obviously, this isn't what I desired to have happen. :) Anyone have any
ideas on either a way that I can get around this little feature? I really
really need the async notification stuff.

Thanks,
Matthew M. Copeland