2007-01-14 15:24:19,845 [Hermes ThreadPool-2] ERROR hermes.browser.tasks.HermesBrowserTaskListener -
java.lang.NullPointerException
at hermes.impl.QueueBrowserWithConsumer.close(QueueBrowserWithConsumer.java:141)
at hermes.impl.QueueBrowserWithConsumer$MyEnumeration.hasMoreElements(QueueBrowserWithConsumer.java:73)
at hermes.browser.tasks.BrowseDestinationTask.invoke(BrowseDestinationTask.java:145)
at hermes.browser.tasks.TaskSupport.run(TaskSupport.java:175)
at hermes.browser.tasks.ThreadPool.run(ThreadPool.java:170)
at java.lang.Thread.run(Thread.java:619)

Looks like an issue when close() is called concurrently.