Menu changes (wording), "Organize Bookmarks" under the Bookmarks menu has been changed to "Show All Bookmarks -- Ctrl+Shift+B" with the same keyboard shortcut. They didn't like the new wording either and it is expected to be changed in a later version. (this is item #7 in the following page of mine) You can make Firefox 4.0.1 look like Firefox 3.6.17, see numbered items 1-10 in the following topic [http://dmcritchie.mvps.org/firefox/firefox-problems.htm#fx4interface Fix Firefox 4.0 toolbar user interface, problems (Make Firefox 4.0 look like 3.6)] Don't know why you want to do a fresh install, that is kind of a last resort, of creating another profile for testing. You have a lot of customizations in your profile, for most extension, for configuration options, plug-ins, passwords, cookies, besides bookmarks. More information: * [https://support.mozilla.com/en-US/kb/Recovering%20important%20data%20from%20an%20old%20profile?s=fresh+install&as=s Recovering important data from an old profile | How to | Firefox Help] * [http://kb.mozillazine.org/Backing_up_and_restoring_bookmarks_-_Firefox Backing up and restoring bookmarks - Firefox - MozillaZine Knowledge Base] * [http://kb.mozillazine.org/Profile_folder Profile folder - MozillaZine Knowledge Base] * [http://kb.mozillazine.org/Profile_folder_-_Firefox Profile folder - Firefox - MozillaZine Knowledge Base] * [http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox Transferring data to a new profile - Firefox - MozillaZine Knowledge Base]