It had been in the fridge for some time but was still 7-8 months from it's use by date. It's the first time it's happened and I buy it often. I took it back to Costco and noticed when I picked up a new can that they had changed purveyors or packaging. Perhaps I wasn't the only one who had a problem. My question is, could the crabmeat have made us sick if we'd eaten it before it started bulging? Just something I've been wondering about.