Fabia 3 rattle from the stereo

Have recently taken delivery of a Fabia 3 TDi combi (1.9) and it doesn't seem to be stuck together quite as well as the original Fabia. Have any other Briskodans noticed an intermittent rattle from the music console? Of course it won't do it to order and just depends on the road surface or engine pitch. It's very annoying and shouldn't be on a brand new car. I thought they were manufacturing Happy Drivers and wondered whether this is a common fault?