I tried at harvesting yeast from the Hazelnut brown, but I don't think that I was sucessful. Stupid question, but how can you tell that you are actually stepping up the yeast instead of the trub from the DME? From what I've heard, the starters don't usually have a typical krausen, is that correct?
Also, does anyone have the Wyeast Pacman in stock?
Midwest did last week when i was there. rogue always has it in stock in bottles of their beer. really, it shouldn't be hard to harvest, try shakepeare stout, it's good and yeasty. the first couple steps are real slow to take off and your yeast layer will be minimal at first. keep slowly building it up and you'll get enough yeast. FWIW, i doubt you'll get much trub from 250 ml of wort made from ~13 gms of DME (that's to get an OG of ~1.020). any build up on the bottom of the flask should be yeast.
also, starters in general don't krausen much. they will foam a bit when swirled, but they don't krausen the way a beer does.