I have the following problem: As soon as I have automatically uploaded pictures with the iPhone app and then deleted them again, these pictures are no longer uploaded again. Not even if I select "all photos" in the camera upload.
I suspect that Dropbox stores somewhere which files have already been uploaded... or at least the date of the last uploaded image. All pictures with a date before that are ignored. I think this method is to prevent images from being saved twice.
Would it be possible to change this? It would be a shame to have to use a different provider, but this way the photo upload is too insecure for me.