Last modified: 2010-10-20 13:57:43 UTC
Reupload adds a useless == {{int:filedesc}} == (see URL) to the summary field. Please note that the content of the "File changes:" field goes into the summary only, not into the file description page.
Script should check for the hidden form field "wpForReUpload" of value=1. That indicates a reupload of content.
Should be fixed with r75086