SMTP Local queue is outside calculated baseline Priority

I'm getting these every few hours (they get auto-closed later on, but
re-appear)
Just interesting that no current value is specified after "The current value
is:......"
Also, when I then check the q's there really is nothing evidently wrong. The
one KB (http://support.microsoft.com/kb/889180) that may point in the
correct direction is not really applicable, as the server is already running
SP2.

Any ideas?

Alert: SMTP Local queue is outside calculated baseline
Source: Queue
Path:
Last modified by: System
Last modified time: 03/05/2007 03:25:26 PM Alert description: The SMTP Local
Queue Total is outside calculated baseline. The current value is

This is due to a formatting error in the alert description.

This is due to a formatting error in the alert description. If you look at
the alert context dataitem, then you should be able to see a value called
Average which is the missing value in the alert message.

-Rajeev