User Agent: Mozilla/5.0 (X11; Linux i686; rv:6.0) Gecko/20100101 Firefox/6.0 Build ID: 20110811165603 Steps to reproduce: get firefox from ftp-server ftp://releases.mozilla.org/pub/mozilla.org/firefox/releases/latest/linux-i686/de/ which actually points to ftp://releases.mozilla.org/pub/mozilla.org/firefox/releases/6.0.1/linux-i686/ Actual results: missing signature file firefox-6.0.1.tar.bz2.asc this seems to be the same for other versions of 6.0.1 too Expected results: a valid signature file firefox-6.0.1.tar.bz2.asc should be there to have chance to check the integrity of the installer file.