I played it 5 hours after the servers opened and experienced no server lag. The loading time was about a few seconds if you were referring to the loading screens between areas.Although in an hour, I maybe experienced some lag for a few seconds (my toon was "time-shifting" and skipping frames) but that was it.

My friend took a day off for the diablo opening and was utterly frustrated for that first few hours. He kept getting the error=37 or 3006,etc. After that, everything was smooth sailing.

With regards to the game itself, I am loving the witch doctor. The abilities did not make me lookup a wiki or a game guide website as a knee jerk response. I was actually exploring each ability. I admit I miss this aspect in gaming where min/maxing is key to getting the most dps, etc.

The story is expanded with more depth. The previous diablo storyline was a bit on the thin side in my opinion and this one (although, they're technically recycling the Leoric storyline) has more meat to it.

I'm excited to test out the other classes. The monk and the wizard looks interesting.

Hope the servers in your area clear up. See you online.