[support] Some images are not displayed the content

Hello Could someone help me to understand why 2 images (0004_0.png and 005.png) are not displayed in this content ; http://david.hautbois.free.fr/drupal/?q=content/ins%C3%A9rer-des-cartes-g%C3... The web server/Drupal returns "302 found" but not "200 OK". (Using firebug) I've mixed private and public download method to analyze the issue. Drupal 6.12 + CCK 2.2 + FileField 6.x-3.0 + FileField Paths 6.x-1.2 + TinMCE I don't understand.... Is the private download method limited to 3 by page ? Is there a problem with my web hosting provider ? Thanks. David.