I also noted that when one "gnome terminal" window stops to response to key events, all other "gnome terminal" windows are also affected, during which time, launching any new instance of "gnome terminal" does not solve the problem unless all exinsing "gnome terminal" windows are closed.
-- Some gtk+ programs (gvim, gedit, gnome terminal, firefox...) sometimes do not receive keyboard inputs https://launchpad.net/bugs/40137 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
