I have the BC Sam Adams Cream Stout clone finishing in my secondary (been there a little over two weeks now). I was about to the bung and airlock off tonight to take a gravity reading when I noticed a few little white spots on the top of the outside lip of the carboy neck. I didn't know if was mildew or something that had somehow dried on there. When I ferment, I usually sit the entire carboy (wrapped in a dark t-shirt) in a large rubbermaid tub of water (around 65-67 F) to maintain temperature and darkness. If it was mildew or some kind of mold, I don't know how long ago it would have developed. I ended up not taking the reading and instead washing my hands, finding the highest proof vodka around the lip of the carboy where the spots were. Should I be worried about something inside the carboy that would have spoiled the beer? I washed everything and sanitized it with iodophor before racking; and I didn't rack until the airlock on the primary was bubbling once every 2+ minutes or so.
Long story short: do you (all) think my beer may have been spoiled, or, survived contamination?