I'd carry on as normal, as I don't use multires or D2MR anyways, and then I'd sit and laugh/get annoyed from people complaining about it here on the forum and in games/chat lobby.
What would you do if you were on your way, driving, into work/class/wherever in the morning, when all of a sudden, a large meteorite flies across the sky and crashes/explodes into the Earth 10 miles ahead of you on the road?