Probably not. There are a few different ways to troubleshoot this problem. First, make sure your lid is properly snapped down. Even the smallest gap will allow the co2 to escape. That equals to no airlock activity. Another remedy (most common) is that the fermenter is to cold. Move to a warm part of the house and give the fermenter several swirls to help kick start the stuck yeast. Giving your fermenter a gentle swirl will help agitate the dormant yeast into working again. Sometimes the beer finishes fermenting before you see any airlock activity. Dry yeast can finish fermenting under the right condition in 24-48 hours. The best way to know if your beer has fermented is to use a hydrometer. If it has lowered since the original gravity reading, you know fermentation has taken place.