User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 Using firefox 1.0, and while following theme download instructions at https://addons.update.mozilla.org/themes/moreinfo.php?application=thunderbird&version=1.0&os=nt&id=221 , A user is prompted to download the index.php page instead of the actual target. Reproducible: Always Steps to Reproduce: 1.Go to https://addons.update.mozilla.org/core/install.php?passthrough=yes&uri=http://ftp.mozilla.org/pub/mozilla.org/themes/walnut_for_thunderbird/walnut-1.0.1-tb.jar 2.Read instructions to right click and save as 3.Be prompted with a save dialog for index.php instead of the target walnut.jar file Expected Results: The download URI should be constructed in such a way as to prompt the user with an appropriate file-type

*** This bug has been marked as a duplicate of 275900 ***