I can change the tabs in firefox by using Alt + 2 or Alt + 3 or alt + 4 etc. I accidentally found today that Window key + 2 can be used to zoom in! Window key + 1 is for Normal screen size.

I was looking for the file translate.html from my backup drives, e: and f:
Since it was taking some time on Windows system, I stared the live session of Ubuntu and used the following command after touching both the drives from "Places" menu.

find /media/ -name translate.html

Very fast and accurate results!

The root account is disabled by default on Ubuntu installations, mainly to prevent you from doing something you didn’t intend to do.
You can enable root account as follows:

1. Type sudo passwd root and provide a root password.
2. Then head on over to System > Administration > Login Window, go to the Security tab and check “Enable local system administrator login”

You should now be able to login as root from the Login prompt. As an alternative you can use “sudo su” to provide your password and get root prompt.

You can make Ubuntu remember the applications you had open when you last logged out, so that when you log back in again you’ll find all those applications running and you can resume right from where you left off.

To achieve this go to System > Preferences > Startup Applications, then go to the options tab and check “Automatically remember running applications when logging out”