Do you mean the download file size or the installed file size? The installed file size should be about 28 MB on Windows, the download file size is about 8.5 MB. *http://releases.mozilla.org/pub/mozilla.org/firefox/releases/3.6.13/win32/en-US/ ---- Your above posted system details show outdated plugin(s) with known security and stability risks that you should update. # Java Plug-in 1.6.0_07 for Netscape Navigator (DLL Helper) # Shockwave Flash 10.0 r42 Update the [[Managing the Flash plugin|Flash]] plugin to the latest version. *http://www.adobe.com/software/flash/about/ Update the [[Java]] plugin to the latest version. *http://www.oracle.com/technetwork/java/javase/downloads/index.html (Java Platform: Download JRE)