Do you not think that using the term 'grounded' is a bit...extreme? To me grounding suggests taking an aircraft type out of revenue service for an extended/indefinite period of time such as Pakistan International Airways grounding their whole 747 fleet, they don't know what they're going to be doing with the aircraft and whether or not they will ever enter service again. Along with SAS grounding their Q400s last year and removing them from their fleet...only to buy more later on [:p]. The A380 has gone tech which happens every day all over the world.
Like McMaddog said it has had a very good entry into service, SIAs senior vice president for engineering said 'I've never seen such a good introduction' [:D]