With Fedora 17 I have a PS/2-connected keyboard. If I hold just the left CTRL key down for a period (say 5 seconds) then the whole keyboard locks up. The USB-connected mouse still works and I can navigate menus, etc. I can logout and then the keyboard works for login. While locked up I cannot use CTRL-ALT-2, etc., to switch to a different virtual terminal.
Anyone seen similar symptoms and/or have a clue as to the cause and/or a cure?