Firefox Desktop OSs

v3.5 - Disable Location Aware Browsing
Firefox 3.5 introduces Location-Aware Browsing (a.k.a. Geolocation) if you are concerned about your privacy, the feature can be turned off with the following simple tweak.

 Open Firefox and in the address bar type about:config, press 'I'll be carefull, I promise' button In the 'Filter' box paste the following: geo.enabled In the window below double click on 'geo.enabled' to change the value from 'true' to 'false' 

Location-Aware Browsing - An Overview

This new feature uses Google Location Services to determine the location of your computer using the following: the computer’s internet IP address, information from nearby wireless access points, and a random client identifier (this is assigned by Google and expires every 2 weeks).

v3.5 - Keep The Window Open When You Close The Last Tab
In previous versions of Firefox if under Preferences/Options --> Tabs was set to 'Always show tab bar' pressing Ctrl+W if a single tab was showing it blank the contents but left Firefox running. In Firefox 3.5 even with this option set; pressing Ctrl+W with a single tab showing closes the programme.

 Open Firefox and in the address bar type about:config, press 'I'll be carefull, I promise' button In the 'Filter' box paste the following: browser.tabs.closeWindowWithLastTab In the window below double click on 'browser.tabs.closeWindowWithLastTab' to change the value from 'true' to 'false'  Now clearing the contents of the last tab using Ctrl+W will leave a blank tab and not shut the programme.

v3.5 - Remove 'New Tab' Button
 Locate the userChrome.css file in your Firefox user profile, this can be found in the following locations depending on your operating system:

 Linux - /home//.mozilla/firefox/xxxxxxxx.default/chrome OS X - ~/Library/Application Support/Firefox/Profiles/xxxxxxxx.default/chrome/ <li>Windows XP - C:\Documents and Settings\<your_account>\Application Data\Mozilla\Firefox\Profiles\xxxxxxxx.default\chrome <li>Windows Vista - C:\users\[User Name\AppData\Roaming\Mozilla\Firefox\Profiles\xxxxxxxx.default\ </ul> If the userChrome.css file does not exist you may need to create it, there is usually a sample file included in the installation which you can copy. <li>Add the following at the end of the userChrome.css file: .tabs-newtab-button {display: none} <li>Save and close the file <li>Start Firefox 3.5 </ol>

v3.5 - Show The Close Button On The Last Tab
When there is only have one tab left open it does not have a close button, because if you close it it would close Firefox (unless you have implemented the 'Keep The Window Open When You Close The Last Tab' tweak above). It is still possible to close it pressing Ctrl + W, or selecting Close Tab in the File menu. The following code give you back the button.

 <li>Locate the userChrome.css file in your Firefox user profile, this can be found in the following locations depending on your operating system:

<ul> <li>Linux - /home/<your_account>/.mozilla/firefox/xxxxxxxx.default/chrome <li>OS X - ~/Library/Application Support/Firefox/Profiles/xxxxxxxx.default/chrome/ <li>Windows XP - C:\Documents and Settings\<your_account>\Application Data\Mozilla\Firefox\Profiles\xxxxxxxx.default\chrome <li>Windows Vista - C:\users\[User Name\AppData\Roaming\Mozilla\Firefox\Profiles\xxxxxxxx.default\ </ul> If the userChrome.css file does not exist you may need to create it, there is usually a sample file included in the installation which you can copy. <li>Add the following at the end of the userChrome.css file: .tabbrowser-tabs[closebuttons="alltabs"] > .tabbrowser-tab > .tab-close-button { display: -moz-box !important; } .tabbrowser-tabs:not([closebuttons="noclose"]):not([closebuttons="closeatend"]) > .tabbrowser-tab[selected="true"] > .tab-close-button { display: -moz-box !important; } <li>Save and close the file <li>Start Firefox 3.5 </ol>

Change The Amount Of Results Returned By The 'AwesomeBar'. (v3.>)
The "AwesomeBar" was introduced in v3 of Firefox and allows you to do a keyword search of your bookmarks, tags and history by typing in the address window. As you start typing in the address bar the AwesomeBar shows you a list of a dozen suggestion, this tweak allows you to set a higher or lower number of returns.

 <li>In the address bar type 'about:config' and press Enter. <li>In the filter bar type 'urlbar.maxRichResults' <li>In the windows below double-click on the entry and change the value to 12 </ol>

Disable Extension Install Delay (All Versions)
 <li>In the address bar type 'about:config' and press Enter. <li>In the filter bar type 'security.dialog_enable_delay' <li>In the windows below double-click on the entry and change the value to 0 for disabling the delay and lower values to decrease the wait time, the setting is in milliseconds.. </ol>

Editing The Dictionary Word List (All Versions)
This can be useful if you have incorrectly entered an incorrect word in to the dictionary or if you want to add custom entries, i.e. scientific words, place names. The location of the dictionary can be found in the following locations depending on your operating system: <ul> <li>Linux - /home/[User Name]/.mozilla/firefox/xxxxxxxx.default/extensions/en-GB@dictionaries.addons.mozilla.org/dictionaries <li>OS X - ~/Library/Application Support/Firefox/Profiles/xxxxxxxx.default/ <li>Windows XP - C:\Documents and Settings\[User Name]\Application Data\Mozilla\Firefox\Profiles\xxxxxxxx.default\extensions\en-GB@dictionaries.addons.mozilla.org\dictionaries <li>Windows Vista - C:\users\[User Name\AppData\Roaming\Mozilla\Firefox\Profiles\xxxxxxxx.default\ </ul> Open the following file to edit: <ul> <li>Linux - en-GB.dic <li>Mac OSX - <li>Windows XP - en-GB.dic <li>Windows Vista - </ul>

Enable In-Line Spell Check In All Textboxes And Webforms (All Versions)
 <li>In the address bar type 'about:config' Enter <li>In the filter box type 'layout.spell' <li>In the windows below double-click on the entry and change the value to 2 </ol>

Turn Off Bookmark Toolbar Icons (All Versions)
 <li>Locate the chrome directory: <ul> <li>Linux - /home/ /.mozilla/firefox/xxxxxxxx.default/chrome <li>Windows - C:\Documents and Settings\[User Name]\Application Data\Mozilla\Firefox\Profiles\[User Name]\chrome\ </ul> <li>Create the file userChrome.css <li>Paste in the CSS following code: /* Hide bookmark icons in the Personal Toolbar */toolbarbutton.bookmark-item > .toolbarbutton-icon {display: none; } <li>Save and Restart Firefox </ol>