OS : Win95 (If you can call it a OS)

What it doze : It is installed as a screen saver, but instead of running
               until  key is pressed or the mouse move it just pops up
               and tells you that it is the "Screen Saver Saver" and
               ends and then the timeout starts all over again.

How-to: Just copy both "SSS.exe" and "VB40032.dll" to
        the system folder.
        Then use the control panel to make the saver default.
        Here we have a known bug, but who cares..:)