You can try this add-on to see if that's what you are looking for:

https://addons.mozilla.org/en-US/firefox/addon/toolbar-buttons/

I just went through the list of the add-on I posted and couldn't find a 'New Tab' button there. The following add-on does:

https://addons.mozilla.org/en-US/firefox/addon/tab-mix-plus/

Unfortunately that add-on didn't do the trick. Strange, this seems like one of those features you don't know that you'll miss until it's gone. I'm apparently very used to using both locations to open tabs and now it feels like I'm working on someone else's computer.

You can also try this one:

https://addons.mozilla.org/en-US/firefox/addon/new-tab-toolbar-button/

I haven't tried this one, but wonder if you are able to drag it into the Customize Windows (View > Toolbars > Cusotmize) and then drag it to the end of the tab strip.

You can make both New Tab buttons visible with code in userChrome.css

Add code to userChrome.css below the @namespace line.

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* only needed once */

#new-tab-button { visibility: visible !important; }
.tabs-newtab-button{ visibility: visible !important; }

• http://kb.mozillazine.org/Editing_configuration
• ChromEdit Plus: http://webdesigns.ms11.net/chromeditp.html

cor-el, I followed your instructions, created the chrome folder (since it didn't exist), created the userChrome.css file in that folder with the lines you provided, restarted Firefox and nothing. I still get the one and only one open new tab icon. I can move it back and forth between the two places i want it to appear but I can't have it in both places at the same time. Ug.

You can try to delete localstore.rdf to reset all toolbars if you do not see two new tab buttons. If you use extensions like Tab Mix Plus or another theme then see if it works in Safe mode with all extensions disabled.

In Firefox 4 you can use one of these to start in Safe mode:

• Help > Restart with Add-ons Disabled
• Hold down the Shift key while double clicking the Firefox desktop shortcut (Windows)