Yong Hao Gao [http://community.jboss.org/people/gaohoward] replied to the discussion "Negative MessageCount" To view the discussion, visit: http://community.jboss.org/message/559267#559267 -------------------------------------------------------------- Yes it's possible to be negative. The reason for this is that the message delivering and acknowledging are synchronous. A messages is being delivered to a consumer in a thread and the counter is updated in another. So their is a chance that a message ack comes bebore the counter is added. Howard -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/559267#559267] Start a new discussion in JBoss Messaging at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]