After we noticed that, we've been checking other areas during heavy rains. We've seen water coming from other drain holes, though not that amount.
The roof was installed after Charley by one of those contractors that come into disaster areas and disappear after the emergency work is done. We bought the house in December and had two inspectors check the roof and both said it was good. But I will get out the ladder and see if I can spot any cracks.
My neighbor across the street spent 6 months caulking every single gap on his concrete tile roof with 3M 5200.

They use that stuff to bed sailboat keels. Charley couldn't do a thing to his roof. But I doubt I will take on such a monumental (and expensive) task.
And yes, it is concrete tile on my roof. My bad.