got in on this late:
I like the capasitor theory, especially if you are in a dry climate, but it would still be a sign that there is a discharge across air, (the noise could be the expansion of a small pocked of air in a tight place...) You will get the same thing on tvs sometimes.
as far as os 10, the change to unix core makes my pine for a mac os box. I have tried to jump ship to *nix but my 2-3 brief trips have ended with needing one of my windows only utilities. Heck I used open office exclusively for over a year till book designer required that I install MsWord
... Right now I'm performing daily negotiations with Vista Ultimate... and sometimes it demands a sacrifice of blood, time or money... luckily if it demands more I have 2 first born.