Anyone who has troubles making their own sourdough started should visit Breadtopia I just finished my sourdough starter from the Breadtopia website:
It is make with pineapple juice to start off with (which is wierd), but man, did it make a killer starter. Can you say 'powerful'. I used a local milled organic rye flour to start off with and the result was amazing. This is my first loaf. It is a little flat; when I scored it just before baking, i kinda deflated it. Still it is tangy delicious!