Tested on BizTalk Server 2009
Possibly resolved the double firing problem.
Added a second task interface that supports transactions and a SQL Task similar to the old SQL adapter.
Still working on the documentation.
Binding configuration not compatible with previous versions. You will need to save any current binding files, delete receive locations using the previous adapter and manually re-add these receive locations!!!
This resulted from a change in the Admin Console code (changed to a new tabbed property page similar to the WCF adapters)