No not slang for great but it is literally buzzing. I have my earhpones plugged in (my small minidisk ones) and I have picked up an electronic buzzing sound, I can hear it with the speakers too. I know there is usually a bit of a sound in the background - this is supposed to be normal BUT the pitch of the buzzing changes whenever I open a different window. It even changes pitch when I scroll around a window.
It sounds very strange, I could probably knock out a tune by ALT-TABbing between windows and programmes.
Anyone know why it is doing this - before I get an electric shock down my ear canal?