Several times over the past few weeks I've had my PC (Ubuntu 16.10*) apparently lock up: desktop stops changing (clock stops updating) but the mouse (usually) continues to move. Sometimes I can SSH in, although more often I can get as far as entering username/password but never reach a terminal prompt.

Run 'top' in a console window on the screen beforehand. I find Firefox can do this with some web sites that are too javascript-heavy, load averages up to 50 or more. -- Christopher Dawkins Archivist, Felsted School http://archives.felsted.org Garnetts Corner, Jollyboys Lane North, Felsted, Dunmow, Essex CM6 3DU cchd@pjcd.org 07816 821659 01371 821076