Welcome to Firefox 5. You can rearrange the toolbars, it only takes a minute. The first step if you have the orange Firefox button and prefer the classic menu bar: tap the Alt key, then choose View > Toolbars > ''check'' Menu Bar From there you can turn on missing toolbars and customize. But if it doesn't suit you, here's the process to roll back: First, I recommend backing up your Firefox settings in case something goes wrong. See [https://support.mozilla.com/en-US/kb/Backing+up+your+information Backing up your information]. (You can copy your entire Firefox profile folder somewhere outside of the Mozilla folder.) Next, download and save Firefox 3.6 to your desktop for future installation. http://www.mozilla.com/firefox/all-older Close Firefox 5. You could install Firefox 3.6 over it (many have reported success) or you could uninstall Firefox first. If you uninstall, do not remove your personal data and settings, just the program. Unless you have installed an incompatible add-on, Firefox 3.6 should pick up where you left off. If there are serious issues, please post back with details. --- To control when updates install, change your setting here to "Ask me": Tools menu > Options > Advanced > Update "mini-tab"