This is an unfortunate development! It appears that one of my processors has died on me! Is this, in fact possible - and still be running? I have included a screen shot, using Temperature Monitor to show the processors and ambient temps. What other way could I determine if it truly dead? And lastly, can a replacement be had? (I'm fairly adept at computer repair) If so, where? thanks so much for any help!! I really can't afford another mac right now - Help me keep this one alive a bit longer!!