HP launches Linux-loaded Eee PC rival (Register Hardware)

Yep, the funny part is that it was not only mine, but several Centrino laptop we had in my
class at college back then (3 or 4 laptops).

OTOH, the backlight failed 3 years later, so it could have been the inverter making the noise
(I guess a high voltage component is more likely to make audible noises), but it lived in
imminent failure-state for a long time, then. :)

- The displays at the company stopped doing it after redesigning the control system, and
indeed it was a sign of a error, but in the design, not the component (I can't remember the
details, I was just a lowly tester).

http://groups.google.com/group/linux.kernel/browse_thread...

That's a link to a Linux Kernel thread about singing components.  Apparently the problem
became much worse on systems running Linux with a 1,000 Hz tick rate.