I had the same problem as others with the greying out when trying to upload a picture to a thread today, but that is not my question. My question is why did I get both an image and a thumbnail posted in the same posting? Here is the example. I don't remember having this happen before.
http://nikonites.com/landscape/19189-post-your-sunset-shots-25.html#post391953
http://nikonites.com/landscape/19189-post-your-sunset-shots-25.html#post391953