^^My new PS3 took 11 hours to re-install my game,started the install when I came home from work and could play when I woke up. As for the lag issue, no official announcement has been made by devs, but I played the entire weekend and had no lag issues. I'll play another week and see if it's actually fixed or was it just a quieter weekend in DC, doubt it was quieter as the log in screen said the population was high.
PS: If you do get the game, just remember, I use - playing a minimum of 4 hrs a day in the week and on weekends I can rack up 35 hrs no problem - 5gb bandwith p/m and that's when there's no updates/expansions to download and I only play DC online no other games, if there are Downloads I use 11 gigs + depending on the size of the download, so that's a cost that not a lot of people know about, so before you decide to get it, just know that it can chew bandwith.