Every once in a while, especially when I haven't touched the remote for a few seconds, when I swipe on the trackpad I get audio pop/click in addition to the system menu sounds. it's kind of a one-off but I'll hear it occasionally as I navigate the menus. It doesn't seem to affect playback of video or audio, just the system UI. Anyone else experiencing this? I figure this is a software issue, however I was wondering if maybe the HDMI cable or something could be to blame.