Yeah, plenty. Water came in by the bucketful in my 1996 Catalina 28 until I found the source of the leak. Obviously, there's no single place a given boat is going to leak.
When I got my 2014 Catalina three years ago, I was bummed that there was water staining on the aft bulkhead. What I discovered though, is that there was no leak. The boat came with fitted mattresses that have vinyl bottoms. Condensation develops between the mattress bottoms and the fiberglass they sit on, and gradually makes it's way to the bulkhead. The cushions in my 28 did that too. One would think that they'd learn this is a problem, but nooooo. The solution is to remove the offending cushions or put some sort of expensive dry bunk product under the cushions.
So the moral of the story is, before you spend too much time finding the leak, eliminate the possibility that it's condensation from the cushions. Of course, it's probably coming from condensation and a leak.