When I started coding I though I will just add the deferred calls where necessary later. Now it seems to me like I have to change the whole architecture of my app. I am running twisted as a Web-server to serve .rpy files. In these files I create quite complex html pages. In that process I also access a database. So when I tried to adapt to the adbapi I encountered proplems because: Starting from the .rpy file I call a method, which calls a method, ..., which calls a method, which eventually calls a method that queries the database. ->So where does my blocking code start? Is it just the last method that queries the db or is it the first one of the chain? ->Is there a way to make my db call deferred without reversing the whole method chain? ->Why don't I just make all the code in the .rpy deferred? Help very much appreciated. _stephan