One of the new features coming to Firefox 3.5 was tab tearing.  What has become a nuisance for some, it lets you drag a tab outside of Firefox and launch in a new window.  I kind of like the feature, however if you do not – there is an add-on that will help sooth your pain.

You will want to pickup the bug489729 add-on for Firefox.  This oddly named extension comes with two main controls. You can:

• Disable Detach Tab – use this to disable tab tearing
• Enable Drop URL – use this to be able to drag a tab to your desktop to create a shortcut.

Now, what if you want to keep tab tearing, however you would like the ability to undo a tab detachment?  Then you need to pick up the Undo Detach Tab add-on for Firefox.  As the name says, it will add a context menu option where you can undo your tab tearing.