I installed the 1.2 version on my server. Since then when I get almost 4.000 visitors online, I cannot access my sites anymore. Everything on the server is ok, I don't get any errors but somehow I can't access my websites. After 20 hours or more, they came back and when I get almost 4.000 visitors online, the same thing happens. My community software was from www.mybb.com but when I changed to xenforo those things started to happen. I dont know what to do. I really like the new software.