My business site was back up at 9:00 tonight - 13 hours after the DNS change began. That’s about 4 times longer than it took when I set up the account, and the techs for my host told me that there was a mistake in the DNS when they switched it back this morning.

This is the first problem I’ve had with them, but it could have been a costly one, say, if I was a retailer. I’ll remember not to go changing any master domain names from now on.