Big rain yesterday, and I found several leaking spots on the ceiling in the bathroom. Could anybody tell me whether this is caused by a leaking roof? And how to repair it? I uploaded the pictures to my flickr, and this is the link. 2011-05-03 13.08.56 | Flickr - Photo Sharing! 2011-05-03 13.08.38 | Flickr - Photo Sharing! thanks.