Image doesn't display

Hi,
I use FCKeditor in drupal ( I used the newest released version).
I install and configured the files to enable uploading an image.
I can see the uploaded image in the "editor box" and alsowhen I put its direct url in the browser, BUT , when I "submit" or "preview" the new page that should include the new image, the image isn't displayed!!

hat's the problem?
(I saw similar problems from the last 2 days, but not the same!)