In "windows" I go into "my pictures" to view my photos. If I want to delete some I click on them and if more than one I hold down Ctrl as normal. Instead of deleting them it duplicates them and so I am ending up I discovered with as many as 50 copies of the one I thought I deleted. Also happens when I try to delete singly. It is driving me nuts.
Oh that problem brings back memories - it used to happen to me too! I know exactly what you mean about ending up with hundreds of copies! When you hold down CTRL and click on the next picture, make sure you do a little pause and DON'T make a dragging movement when you move to the next one - it's so easily done. Make the next click more deliberate. It's really hard to explain.