We were on that side of the park from 9-10 or so. If you were over there earlier or later it is likely the lines were shorter. By 11 there were plenty of people leaving the park. Asylum was stretched all the way to the 2 hour sign when we went (at least that's what I thought the sign said). Cornstalkers was all the way down to the bottom of the Nile hill, and Dollhouse line was just as long as Asylumn. Dunno. Just stating what I saw. Since I didn't have to wait, I had to estimate.
Now thinking back on it Doll Factory had a long line, ended up skipping it till around 11 when it was almost a walk on.
Anyways I did not want to start a 2012 haunt page since there hasn't been any talk about it yet, but I think I figured out WoF's pattern with upgrading haunts. Check out this timeline:
2001-2005: Carnivorous Clowns ( Re invented into Carnevil scare zone in 2007)
2004-2008: Lore of the Vampire ( Club Blood is added to the basement portion in 2009)
2004-2009: Camp Gonnagitcha Witchahatchet ( Upgraded to Corn Stalkers in 2010)
2005-2010: Dominion of Doom ( Upgraded to Terror of London in 2011)
See the pattern? It looks like a haunts life span is 4 to 5 seasons before it gets upgraded. Which means:
2006-2011???: Asylum Island (Upgrade to ??)
Before some one starts the rumor mill please remember this is just pure speculation. I could be way off with these findings.