Well, I have a brand new box/install: (thus, your response of "you haven't rebooted since 2010 won't hold water...")
Microsoft SQL Server 2008 R2 (SP2) - 10.50.4000.0 (X64) Jun 28 2012 08:36:30 Copyright (c) Microsoft Corporation Enterprise Edition (64-bit) on Windows NT 6.1 <X64> (Build 7601: Service Pack 1)
My logs are FULL of this message regarding "service broker and conversation handle closing..cannot find the remote service...because does not exist.. code 8490...blah blah"
This is an OTS application that is installed on an application server that uses service broker.
I've been researching WHY I am getting these error messages to no avail. All I seem to find is "it's a bug.."
The application is not working properly yet and am still trying to figure out with the vendor where the issue is and am trying to figure out why I am getting this BUG that appears to have been fixed lightyears ago...
Just wanted to state: your response was pretty useless.