I found the bug : http://drupal.org/node/440572 David Hautbois wrote:

Hi

I enabled the private download mode. Now, all the downloaded files are named index.php or IoxjCBnN.deb.part. Is there a way to keep the original filename with this mode ?

I use this mode because, I want to track the downloads (with download counter module).

Thanks.

David. -- [ Drupal support list | http://lists.drupal.org/ ]