Mystery folder entitled "(A Document Being Saved By...Process)" appeared in my trash. Like an endless chinese box, the folder contains another folder called iPhoto Library, which contains another folder Previews, which contains a folder called 2012, which contains three folders O2 03 04, which in turn contain other folders, etc. etc. To cut a long series short, there are folders within folders until I get to folders that seem to contain all my photos. THREE QUESTIONS: How did this folder get created? Will throwing it away delete all my photos? What do I do with it?