Never mind ... I think I figured it out. The damn thing was running Wayland. I logged in to the XFCE session using X11 and all of the symptoms have gone away. Can I complain about Wayland like some of you complain about systemd? I have never seen Wayland work successfully. ======== Bill Gee On Wednesday, July 21, 2021 7:34:16 AM CDT Bill Gee wrote: > I am running the stream version of CentOS 8 on a system that hosts a bunch of VirtualBox guests. Recently, like about a month ago, a problem started showing up. When working at the console, the system is almost completely unresponsive. In a terminal session, any key that you press might show up a minute later. Any mouse movement might show up a minute later. > <snip>