Yesterday the system notified me of an update, which included a new glibc. So I installed it.
Now, when I open Konsole, it does not respond to the keyboard though it does respond to the mouse. I installed xterm; it won't open. I installed eterm; it opens but promptly gives an exit message that says: "press any key to exit" and, when I press the key...it exits.
Without a terminal, this system is useless. I'll have to roll back unless there is a solution to this that can be quickly implemented.