When the whole replica set is down, java driver generates this log message every 5 seconds.

2010-12-06 14:35:10,294 ERROR [STDERR] (ReplicaSetStatus:Updater) Dec 6, 2010 2:35:10 PM com.mongodb.ReplicaSetStatus$Node update
SEVERE: can't update node: shared-mongo-004.1515.mtvi.com:27017
java.lang.NullPointerException
at com.mongodb.OutMessage.reset(OutMessage.java:73)
at com.mongodb.OutMessage.<init>(OutMessage.java:51)
at com.mongodb.OutMessage.query(OutMessage.java:38)
at com.mongodb.DBPort.findOne(DBPort.java:142)
at com.mongodb.DBPort.runCommand(DBPort.java:159)
at com.mongodb.ReplicaSetStatus$Node.update(ReplicaSetStatus.java:119)
at com.mongodb.ReplicaSetStatus.updateAll(ReplicaSetStatus.java:277)
at com.mongodb.ReplicaSetStatus$Updater.run(ReplicaSetStatus.java:238)

Seems like an NPE is not what should happen. Strange thing is that OutMessage.java:73 is

        _id = ID.getAndIncrement();

and I'm not sure how that line could generate an NPE.