Adding a caps lock/Num lock/Screen lock indicator in ubuntu

You will be in big trouble if your computer ( specially laptops) doesn't have indicators for  caps lock/Num lock/Screen lock. So to get over this problem you can install an applet called "lock-keys-applet" from Synaptic package manager. And add it to the Gnome panel. Then you'll get indicators for caps lock/Num lock/Screen lock. Cheers...!