Some people apparently have REALLY dusty houses. I see a lot of computers that are so incredibly dusty inside, there is a thick layer resting on the video card, on top of the cpu heatsink, etc. Those computers typically have a lot of random hardware problems.
As technology gets more advanced, it also becomes more demanding. People need to learn to keep up so they can maintain their stuff. Either put the machine in a clean environment, or be prepared to blow it out every so often. If this story is based on truth, I can only imagine the ungodly horrors that the tech found in that kid's PS3.