Regarding machines committing suicide, I have one here:
"Why?" Roland asked abruptly. "Why do wish to kill yourself?"
"I AM BORED. ALSO, I AM SUFFERRING A DEGENERATIVE DISEASE WHICH HUMANS CALL GOING INSANE, LOSING TOUCH WITH REALITY, GOING LOONY TOONS, BLOWING A FUSE, NOT PLAYING WITH A FULL DECK, ET CETRA. REPEATED DIAGNOSTIC CHECKS HAVE FAILED TO REVEAL THE SOURCE OF THE PROBLEM. I CAN ONLY CONCLUDE THAT THIS IS A SPIRITUAL MALAISE BEYOND MY ABILITY TO REPAIR... DO YOU BELIEVE, ROLAND OF GILEAD, THAT MACHINES MAY GROW SENILE?"
-Blaine the Monorail Train
The Waste Lands by Stephen King
(hhmmm... so it seems that boredom can kill.)