How to keep Firefox 3.5 running after closing last tab and add a close tab button on the last tab
Firefox 3.5 came with one one more annoying UI change that is once you have closed all the other tabs and only one tab is open the close tab button disappears from the tab and you can now just close the Firefox window by pressing the close button on top right or just hit ctrl+w but the problem is that this behaviour is not really suitable for a browser like Firefox which takes ages to start once you close it unlike Google chrome, and personally i am used to closing all the stuff in the tabs and let Firefox keep running and then open any website i have to in the empty tab. so now i am going to show you guys how to disable Firefox from closing the window when you close the last tab.
Type about:config in your Firefox address bar and press enter press the “I’ll be careful, I promise!” button and now search for “browser.tabs.closeWindowWithLastTab” and double click it to change its value to false, now whenever you close the last tab using ctrl+w or the close tab button we are just going to add the Firefox window wont close.
