Seeing the other thread about hearing the high pitched whine of a CRT TV, I thought I'd ask this. If you live in a quite area, and at night when all the electronic devices are turned off in your house and there are no cars outside so there's almost complete silence, do you hear anything? I have to really focus and stay still so I don't make any noise, but I hear a high pitched constant noise. I have no idea whether it's just imagined, or because my eardrums are ringing from a day of usage, but it actually sounds quite loud in my head. As soon as I make a noise, it's diminished considerably. After a while of being in silence, it fades away.
Weird, eh? =/
Weird, eh? =/