hi alan, 

there are warning messages from combinedmuontrackbuilder in tier-0 processing with recent data. 
i extracted 15 events from run 179710 lb300 express stream (early morning of friday, 15 april). 
with atlasproduction 16.6.3.6, 
+verbatim+
reco_trf.py ami=x111 inputbsfile=/afs/cern.ch/user/g/gencomm/w0/oda/run179710/data11_7tev.00179710.express_express.merge.raw._lb0300._sfo-all._0001.1.combinedmuontrackbuilder outputesdfile=esd.pool.root
-verbatim-
will show warning messages 29 times. there are six types of warnings.
+verbatim+
toolsvc.combinedmuontrackbuilder                  warning  combined muon track is missing the tsos's describing calorimeter association
toolsvc.combinedmuontrackbuilder                  warning  keep original combined track despite cleaner veto
toolsvc.combinedmuontrackbuilder                  warning  keep original standalone track despite cleaner veto
toolsvc.combinedmuontrackbuilder                  warning  muontrack without caloenergy association
toolsvc.combinedmuontrackbuilder                  warning combinedtrack fails with missing caloenergy
toolsvc.combinedmuontrackbuilder                  warning indetextension: reject with insufficient ms measurements
-verbatim-
if these are serious, please investigate the real problems.
otherwise, please lower the message level to debug.

thanks in advance,
susumu 