That's true, it is a pain though, once one goes it's very expensive to get back to working as it should. My RS4 went to Audi for a new shock and recharge, came back and handled like crap, turned out another shock was on its way too...
And if the oil lines for the system need done is a huge job
I believe it was A oil line went in his and few days after that repair, the other one went. Not a good week