I've got the same problem. 99% of the servers I go to I get to the Loading screen after "receiving" and creating character...then it just sits there. I've managed to get on 1 or 2 servers.....but their ping is usually so bad I don't want to actually play there. I just reinstalled Arma2 and Arma2OA via steam..downloaded the beta patch...reinstlled battleeye...installed dayz. running it via 6 launcher or just through Steam still gets the same results.