Firefox-4: Prevent Tab scrolling / tabMinWidth not working / Tab width setting

Firefox-4 does not support the configuration option >> browser.tabs.tabMinWidth [1] In Firefox 3.6 and older, you could set this value to 0 in about:config to prevent the scrolling of tabs if you opened up a large number of tabs. To get this to work in Firefox-4, you need to make some changes to your userChrome.css file [2]. Or you can install the Custom Tab Width Extension [3] In my XP installation the userChrome.css file was in C:\Documents and Settings\<userName>\Application Data\Mozilla\Firefox\Profiles\<randomString>.default\chrome\userChrome.css Open this file, add the below lines /*--start below this line--*/ /*Added to re-enable min tab width=0 in Firefox-4 */ .tabbrowser-tab:not([pinned]) {     min-width: 1px !important; } /*--stop above this line--*/ Restart Firefox and your tab behaviour should be back to the way it was. [1] https://bugzilla.mozilla.org/show_bug.cgi?id=574654 [2] http://blog.miranda.or.at/mozilla/firefox-4-and-minimum-maximum-tab-width [3] https://addons.mozilla.org/en-us/firefox/addon/custom-tab-width/