The fafsa.gov site does not currently support Firefox newer than version 3.6.x. That is their choice. You can install Firefox Portable version to use only on that site and use your installed Firefox 5 for everything else. Firefox Portable installs in a separate folder on your hard drive so that it does not interfere with your Firefox 5.0.1 settings or personal information (bookmarks, passwords, etc.). You can also install Firefox Portable on a USB/thumb/pin drive. *Firefox Portable general information: http://portableapps.com/apps/internet/firefox_portable *Firefox Portable 3.6.19 download links: http://portableapps.com/apps/internet/firefox_portable/localization#legacy36 *Firefox Portable user forum: http://portableapps.com/forums/support/firefox_portable '''If this reply solves your problem, please click "Solved It" next to this reply when <u>signed-in</u> to the forum.''' ------------------------- Not related to your question, but... You need to update some plug-ins: *Plug-in check: https://www-trunk.stage.mozilla.com/en-US/plugincheck/ *Adobe PDF Plug-In For Firefox and Netscape: [https://support.mozilla.com/en-US/kb/Using%20the%20Adobe%20Reader%20plugin%20with%20Firefox#w_installing-and-updating-adobe-reader Installing/Updating Adobe Reader in Firefox] *Shockwave Flash (Adobe Flash or Flash): [https://support.mozilla.com/en-US/kb/Managing%20the%20Flash%20plugin#w_updating-flash Updating Flash in Firefox]