has a decent recommendation about putting a light inside the keezer and darkening the room. A little research I did seems to indicate an air leak somewhere, and it can come from anywhere...
Primary 1: Whiskey Stout
Primary 2: Apfelwein
Bottled: Oat Red Ale, Peach Wheat, Strawberry Dirty Blonde Ale, Brown Sugar IPA
In line: Cucumber Summer Blonde, Kona Pipeline Porter Clone, Bacon Porter
The best yet: St. Nick's Dirty Stout (Vanilla Gingerbread Stout) - guessed at the recipe when boiling, didn't write anything down... DAMN.