Used to disable SERVICE BROKER in single user mode :

ALTER DATABASE [Database_name] SET DISABLE_BROKER;

SELECT is_broker_enabled FROM sys.databases WHERE name = 'Database_name';

when i checked the database after disabling, it shows 'is_broker_enabled'=1

wht can be problem.

Interestingly the broker is disabled but i see the receive_wait messages on 'Activity monitor' for the database where service broker is disabled.

Any thoughts