My 7D is starting to show wild and temperamental Exposure problems. For instance I tried to take a picture outside of a flower bed this morning in 'P' mode and the image was completely blown out ! I figured it was operator error so I took the camera inside and took some more test pictures. Everything seemed to work well until I began using the pop-up flash. That's when I started noticing that the exposure changed with each picture I took. One picture was under exposed while the next picture was over exposed and the next picture was properly exposed. This was without changing any of the settings !