If you're Debian user you must have noticed that every time you login to the system, xscreensaver shows a warning message informing that xscreensaver is very old. But what is an alternative?
Of course, you can go to xscreensaver official website, download latest version and install it instead of the repository's one. But that solution is not ideal, because you'll lose your repository updates and will need to update your xscreensaver manually.