Yeah that happened with my first batch. I set it in my garage in the late fall when it got down to the high 30s. I let it sit in there for a few weeks and then I went and cracked one and it was a dud. So I cracked another... dud. SO I got on HBT and asked the same question and they told me the same. On another note... Does anyone ever do a secondary condition in a corny keg? Since moving to and being homebrewless, I have a plan to do 3 five gallon batches in order to get a good pipeline going. I only have 3 carboys, but I do have 5 corny's that are out of commission do to the fact I had to sell the keezer before I moved out here (sob... its hard to talk about... Stupid voltages...). Until I get another keezer and external thermostat like I had before, I was thinking about conditioning some beers in them. Can someone let me know if this is a good idea or a bad idea and why?