Within Windows Explorer, we have a folder of jpg images. Right now, we have them displayed as thumbnails. However, something funny is happening. File A thumbnail shows (e.g.) a picture of a tree. However, when we double click on it, and bring up Picture/Fax viewer, we see an image of a person. When we drag that file into PowerPoint, we again see the image of a person. File B thumbnail shows (e.g.) a picture of a person. When we double click on it, or drag it into PowerPoint, we see a different image. What's going on? Seems like the thumbnail...