Hello. I installed FC4 at work for the first time and when users login, they get an error "No volume control elements and/or devices found." I tried running gst-register-0.8 as Google results suggest (http://linuxweblog.com/node/323) but we are still getting this error on login. We don't need sound to work on these machines. How can I get rid of this error, please? Thanks, Aleksey