[rules-users] lock() on a RulesBase object

[Mike Merrill]

As I understand the lock() method, the rules base and all stateful sessions 
are 'locked' while the application does what it needs to do to 
update/remove/add packages to the rules base.  Yet, I find that I need to 
additionally synchronize on the RuleBase object to achieve this behavior.  Am I 
misunderstanding what the lock() method is supposed to do?