Exchange UCE Default Filter Level Changes

In checking my Exchange Server 2007 logs tonight, I noticed a message in the event log that concerned me. 

The Unsolicited Commercial Email default filter level has been updated. The new value is 4.   

My concern is that I have not touched the UCE filter since I set up the server and I do not know what is triggering these changes. In searching around the internet, I found the following post that indicated this is a bug in Exchange server.  Here is the relevent portion of the article: 

Changes to the gateway threshold inadvertently report that the store threshold was modified

When a change is made to the gateway threshold, the Exchange store reports that the store threshold has been modified in the event log even if it has not been modified. Following is a description of the event:

The Unsolicited Commercial Email default filter level has been updated. The new value is n.

This event is recorded because the user interface (UI) rewrites both values in Active Directory regardless of whether the store threshold value has changed. The Exchange store is notified of the change and writes the event entry.

The full link is here: http://support.microsoft.com/kb/867633