I rushed out at lunch to buy it, half expecting to see the shelves picked clean. Luckily the Best Buy was nearly dead and I had almost no trouble buying a copy. My only problem was that I got stuck in line behind a (Bargain Hunter) guy buying a flat-screen TV with what appeared to be a stack of printouts and no less than three assorted purchasing cards. Buy the time he had finally finished saving his money, at least seven people had piled up in line behind me. God Bless America.
Currently, I am still at work, so I have yet to install. Though, I have been stalking the web forums in an attempt to glean some buyer feedback. Rumors I've heard state that the servers run fine once you get the game installed and any necessary updates.
I'll probably be installing in a couple of hours, though the wife has come down with both bronchitis and asthma, so time will be taken from playing in order to make kick-ass chicken soup.
Email me and I'll add you to my battle.net account, and we'll party up.