I got a lot of quests done last night on Northrend. Even then, I was shocked how many people were playing at 4AM the day of release. Insanity, really. The biggest problem I had was the first time we tried to take the boat, it disconnected everyone and stuck us in a floating ship in the middle of the ground in the Dalaran Crater. We all had to hearth and try again. Thankfully, the second time worked. I guess taking 100 people at once on a boat is bad news.