I haven't posted on this forum in quite a while, but back when I did, I got very helpful replies, so if you guys don't mind, I have what is probably a very basic question.

I installed a Cadet 3 toilet about 3 years ago, and it's been working fine. I used a extra thick wax ring when I installed it, and I know that I did a good job with the installation.

Now, I'm seeing water seeping around the base of the bowl. I don't think that it's leaking at the place where the tank is bolted to the bowl, because the bolts and rubber washers appear to be ok, but I suppose that anything is possible.

And neither my wife nor I are heavy enough to have rocked the toilet to break the wax ring.

So my question is, what's the most likely cause of the leak? I just bought a new wax ring, but I don't want to go to the trouble of installing it if that's not the problem.