While there haven't been any reports of overclocking damaging a N900, that doesn't mean that their haven't been any damaged. I'm not sure how "widespread" overclocking is. More to the point, there is ample evidence that overclocking can damage hardware in the x86 world. There have been many fried cpus, gpus, memory, burst capacitors, etc. I haven't fried anything, but I did seriously corrupt hard drives while overclocking (wait I think I did kill a stick of ram). Bottom line, in my experience, overclocking can kill hardware, and you'd have a hard time convincing me otherwise. It's irresponsible to say that there is no danger in overclocking.