Hey guys. Whenever I join a server it puts me in and I run around for about 5 - 15 seconds and then it shows "Authentication timeout". I've read every single thread about this and nothing is working. I've reinstalled everything at least 3 times and I've ran steam as administrator. I've deleted the files in regedit. I do not have any antivirus blocking it. Also when I go to verify my game cache in steam it says "1 file failed to validate". When I try to run the Arma 2 OA BETA I get to the Bohemia screen and it cuts me off and says "Bad serial number given in setup".
