I updated my Firefox to version 16 and where I used to be able to middle-click on links to open them in a new tab, now NOTHING happens when I do it. No new tab opens or anything. I've looked through all of my settings and can't find anything that has changed from my previous settings regarding opening middle-clicked links in a new tab / window. HALP!

I personally like being able to close each tab individually in Firefox but if you get too clicky happy you can close tabs by mistake which can be a pain. Here's a little trick to remove the x's from each tab which makes it impossible to close a tab in error again.

Type about:config in the address bar. You will see the message (if you're doing this for the first time) "I'll be careful I promise", click on it.

Scroll to brower.tabs.closeButtons, double click on it and in the Enter integer value box