Taking a screen shot in Ubuntu (and probably most GNU/Linux distributions) is basically by pressing your keyboard print screen button and then choosing where you want to save a PNG image of your screen without any additional applications required.
Steps:
1. Press Print Screen
2. Click on the Save button (or Choose a folder other than the default then Save)
Washington Post Security Fix spent the past several weeks compiling statistics on how long it took some of the major software vendors to issue patches for security flaws in their products. Since Microsoft Windows is the most-used operating system in the world, it makes sense to lead off with data on Microsoft's security updates in 2006.