Not long ago I was using one of my Linux computers and noticed the video player was frozen or locked up. Instead of closing the video player from it’s interface, I used a different approach. The System Monitor program was opened so I could see the running processes. After scanning the list, the Celluloid video player was located. and I was ready to end it. Somehow I noticed the status of it was not sleeping or running. It was a Zombie process! From college I recalled Zombie processes are orphans and are hard to kill. They can live forever until the computer is restarted. I found this to be true as I couldn’t manually end or kill it. It finally died when I restarted the computer.