"Has anyone seen this before or know why it might be happening?"
We have seen this happen....and think it may be related to persisted messages generated from 4.1.1 having problems once 5.0.0 was brought up. Simply clearing out the datastore (we didn't need to save those messages) fixed our problem. -- View this message in context: http://www.nabble.com/NegativeArraySizeException-in-Unmarshal-tp14453548s2354p14926923.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.