My 1120HD is about a year old and about three months ago I started to hear the 'dreaded buzz' and it seems to be getting worse. I am going to make an appointment with a service center to come out and look at it and advise them this issue has been documented and that sometimes either a firmware update and/or a glass adjustment solves the problem. Any truth to this or any updates to this issue over the last six months? Thanks in advance!!!