Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
Want A New iPad But Not Pre-ordered One , John Lewis Have Them! –
If you have not pre ordered and iPad or are already standing in line outside then you are most likely not going to get one tomorrow. Your best bet is to order online now at John Lewis and you can then collect from 2pm Saturday.
Demand for the new ipad is expected to be of the charts so we advise you to do this if you have not pre ordered or are outside freezing right now.