Let me say up front that I don't bottle my beer very often. Back in January I bottled five gallons of pale ale. I let it carbonate for two week then chilled a few and drank a few. They were perfectly carbonated. I didn't drink any more of the bottled beer because I had a bunch in kegs. Last week I put the rest of the bottle beer in the fridge laing down. When I drank one it foamed over real bad. They all did. Then I moved the last six to a shelf where they could stand up. Low and behold, no foam over. Perfect carbonation. Has this ever happened to anyone else?