I would also like to add that the "lag" problem has improved over the beta, although still not perfect.
I'm not bitter at all about the character wipe. I was fully expecting it and planning to restart anyway. The only issue I worry about is the overcrowding. During the first week of release, the newbie areas will be overflowing and newb quest spawns will be badly camped. I've seen lots of this during the strees test and open beta. They just didn't make it large enough to acomodate lots of players. It will be an awful experience for new players.
But I will probably be there on release day, crowding in, because I love the game so much. They should call it World of Warcrack.