after set new_broker, it works for half hour and don;t work anymore, please advise, thanks!

I use ASP.NET 2.0 and SQL 2005, the SQLCacheDependency didn't work stable for me, it usually works and after a while, it stops working. Recently, It doesn't work. Today I reset service broker by

Alter DB set new_broker

It seems all work, but too early to be happy, it doesn't work now anymore. I don't see any record in

sys.transmission_queue

And I don't see new entries in

sys.dm_qn_subscriptions neither when I modify a record which bind to SQLCacheDependy.

I see some errors in log like

Message
The query notification dialog on conversation handle '{8F8CC642-6340-DB11-8F09-0014227B7B80}.' closed due to the following error: '<?xml version="1.0"?><Error xmlns="http://schemas.microsoft.com/SQL/ServiceBroker/Error"><Code>-8490</Code><Description>Cannot find the remote service &apos;SqlQueryNotificationService-f79776f7-9ca5-4c5f-8a66-0d81f7673683&apos; because it does not exist.</Description></Error>'.

Any idea how to find out the problem?

thanks!

Have you applied this patch: http://support.microsoft.com/kb/913364/EN-US/ ?

HTH,
~ Remus