Thanks for the link - hopefully may help someone. Mine though is a 7 speed s-tronic.
I'm still waiting to hear from customer services. The July 14 recall was to change the gearbox oil from synthetic to mineral. What I'm thinking is that this mineral oil is isn't giving the lubrication and so the gears have worn out. If that's the case, and they acknowledge this, then surely they'd have to replace the gearbox for free....