Hi, [https://addons.mozilla.org/en-US/firefox/addon/lastpass-password-manager/ LastPass Password Manager] is future proof up to Firefox 11 and if it is [https://addons.mozilla.org/en-US/firefox/addon/affilorama-seo-toolbar/ Affilorama SEO Toolbar] it is marked compatible till Firefox 10, according to the respective developers. Please see [https://addons.mozilla.org/en-US/firefox/addon/lastpass-password-manager/versions/?page=1#version-1.80.0 this] and [https://addons.mozilla.org/en-US/firefox/addon/affilorama-seo-toolbar/versions/?page=1#version-0.986 this.] You can try to update by going to '''Tools''' ('''Alt '''+ '''T''') > '''Add-ons''' and click the gear icon on the top right and '''Check for Updates'''. This will try to update all the add-ons in one go. To update individually, click '''Extensions''' on the left and right-click an add-on and '''Find Updates'''. ............................................................................................................................... Useful links: [https://support.mozilla.com/en-US/kb/Options%20window All about Tools > Options] [http://kb.mozillazine.org/About:config Going beyond Tools > Options - about:config] [http://kb.mozillazine.org/About:config_entries about:config Entries] [https://addons.mozilla.org/en-US/firefox/addon/whats-that-preference/ What's That Preference? add-on] - Quickly decode about:config entries - After installation, go inside about:config, right-click any preference, enable (tick) MozillaZine Results to Panel and again right-click a pref and choose MozillaZine Reference to begin with. [https://support.mozilla.com/en-US/kb/Keyboard%20shortcuts Keyboard Shortcuts] [https://support.mozilla.com/en-US/kb/Viewing%20video%20in%20Firefox%20without%20a%20plugin Viewing video in Firefox without a plugin] [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder & Files] [https://support.mozilla.com/en-US/kb/Safe%20Mode Safe Mode] [https://support.mozilla.com/en-US/kb/Basic%20Troubleshooting Basic Troubleshooting] [http://kb.mozillazine.org/Problematic_extensions Problematic Extensions] [https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes Troubleshooting Extensions and Themes] [http://kb.mozillazine.org/Testing_plugins Testing Plugins] [https://support.mozilla.com/en-US/kb/Troubleshooting%20plugins Troubleshooting Plugins]

It is the Extensions that are made compatible with a version of Firefox, not the other way. Also if you are indeed using Firefox 8.0.1 then your user agent is wrong as it is at Firefox 3.5.6 in More system details... link on right of your post. See this on how to fix it https://support.mozilla.com/kb/Websites+or+add-ons+incorrectly+report+incompatible+browser