PersistMessages config parameter default value is wrong in the QuickFIX/J User Manual

The QuickFIX/J User Manual says that the default value of the PersistMessages parameter is "N" (false). But in the DefaultSessionFactory its default value is true (line 150):

            boolean persistMessages = getSetting(settings, sessionID,
                    Session.SETTING_PERSIST_MESSAGES, true);

If this parameter is set to true, then there is a memory leak in the FileStore class. The size of HashMap messageIndex is growing all the time. The reset() method does not clear this map.