This is the list of changes since Admin Tools 2.1.5
New features
Added permissions setting 0640 to the list
You can now allow access to media files inside cache, includes, language, logs and tmp directories without allowing full access to those directories
Bug fixes
Expired auto-banned IP addresses were not cleaned up (PRO)
Minimum access level not honoured under Joomla! 1.5
Joomla! 1.5 ACL feature: would not list Managers
Joomla! 1.5: If your access level was lower than the minimum, accessing Admin Tools caused an infinite redirection loop