Dragging and dropping a file from Safari 4, filename.jpg, will result in new filename.jpg.jpeg. "Save image" to downloads does not do this, "save image as" does not do this. I believe, though can not at this time confirm, even downgrading to non beta 4, leaves this little feature in place. Can someone suggest how to solve it, if even temporarily?
*** This bug has been marked as a duplicate of 23847 ***