Sometimes an application will “hang” and stop working. In Ubuntu Linux, there’s a feature called. With this feature, the not responding application will quit within clicks. In Windows, to quit a not responding application, you will have to go to the Windows Task Manager (Ctrl + Alt + Del) to “End Task”.

Sometimes, it takes even [...]

You don’t want other people to access sensitive data which you are going to dispose. Do you know that your files still can be retrieved even if they are being deleted? Yes, even if you empty your recycle bin. It can be done by running any undelete utilities.
How is this possible? Every time [...]