I use firefox as my browser on Ubuntu Karmic Alpha x (can’t remember which one). During one update, my firefox web development toolbar disappeared. There was nothing there aside from the blank grey bar.

How do you fix this?

To fix this, I did the following steps:

1. Right click on the blank toolbar – this will bring up the toolbar selection context menu.
2. Click on “Customize” – this will load the toolbar “Customize Toolbar” screen.
3. Click on the “Restore Defaults” button located on the bottom of the “Customize Toolbar” screen.

By now you should have your Web Development toolbar icons appear where they should be (on the Web Development toolbar!)

“FAIL! That didn’t work!”

Failing the above, you could try the following:

Coming from Windows a few months ago, one of the things I took for granted was the backspace key being a shortcut key for the back button on my web browser – Firefox.

Once I shifted over to Ubuntu, this shortcut was missing from a default installation. If you want to replicate how the Firefox web browser on Windows has mapped the backspace key to go back a page on linux based systems, do the following:

• Open up firefox
• In the address bar, type about:config *this should give you a payload of preferences going down the page*
• Once this happens, enter the word “backspace” in the filter field, this should narrow your entry to one that says browser.backspace_action.
• Double click on the entry and change the value to 0 instead of 1.