I just realised that there is a very light buzzing sound coming out of the back left and back right speakers. It could be heard lightly when there is music being played, which was why i just realised it. I turned off the music and the buzzing sound was indeed quite audible. Please take note about this and tell me whether it is going on with your speakers too?
Yes, I have noticed this with mine as well - I thought it was just a little niggle and have ignored it. But as you to have this then maybe it is something we should approach our dealers about.