I noticed that our shower drain is leaking, dripping onto the floor in our basement. I'm sure it wasn't leaking when we moved into the house, when it was about 7 years old. It's been about 3 years, and the leak is very minimal. My question has two parts. Is it likely that the drip is happening because my husband is quite a big man, ranging between 250-300 lbs and this is stressing the drain somehow? Is a very slow leak like this something that we need to worry about and fix right away?