The Joomla! security team has recently announced the availability of a new Joomla! 1.6 version. 
We too have released a new RSFirewall! revision which includes the new Joomla! 1.6.1 hashes along with some fixes regarding the detection of administrator users.
If you're running RSFirewall! on your Joomla! 1.6 installation, we recommend performing a new System Check and update both Joomla! and RSFirewall! to the latest revisions.
How to update RSFirewall! to a newer revision?
