Yes, I tried, but my case Alex, I would like my home page is not empty and at the same time forbid non authenticated to see the picture on the profile.
If I go to the "view profile" page, I do not have the header block that contains the photo, so I forbid to see the whole page like this.
The result is always the same ... In fact it seems to me that what is missing is the visibility option of the block containing the photo. A suggestion?