[Mailman-Users] Bounce Disable processing not working?

[Charles Gregory]

It looks like the 'disable on excessive bounces' is not working right for 
my (only) list 'ontbirds'.... The bounce log contains patterns like this 
(trimmed to show one address behaviour, omitting 'already counted' 
messages):

Apr 05 09:15:34 2009 (20408) ___ at ___: ontbirds current bounce score: 2.0
Apr 06 00:26:23 2009 (20408) ___ at ___: ontbirds current bounce score: 3.0
Apr 06 00:26:23 2009 (20408) sending ontbirds list
          probe to: ___ at ___ (score 3.0 >= 2.5)
Apr 07 07:47:22 2009 (20408) ___ at ___: ontbirds current bounce score: 1.0
Apr 08 10:57:38 2009 (20408) ___ at ___: ontbirds current bounce score: 2.0
Apr 09 08:08:36 2009 (20408) ___ at ___: ontbirds current bounce score: 3.0
Apr 09 08:08:36 2009 (20408) sending ontbirds list
          probe to: ___ at ___ (score 3.0 >= 2.5)
Apr 10 08:57:05 2009 (20408) ___ at ___: ontbirds current bounce score: 1.0

This seems to be happening for ALL permanently bouncing addresses. 
And I see no trace of 'disabled' anywhere in the logs.... Or is there
a different buzzword I should grep for?

mailman-2.1.5.1-34.rhel4.6

Yes, the bounce score threshold is 2.5
I have bounce info stale after set to 3 days, and addresses which bounce 
for just a day or so are noted in the logs as 'bounce info discarded', so 
I don't think this is the problem.

Any other info needed to solve this?

- Charles