This has been happening a lot since the 1.2 patch. It's fairly game breaking for me. Get into a game, start enjoying it, bam... kicked for invalid packet. Well of course someone has taken my spot, now I have to wait in queue for at least 5 minutes... I would say this happens once an hour on average. I can go a few hours without it happening, sometimes it happens a few times an hour. Very frustrating. Have uninstalled anti virus, turned off firewall, tried many things. Can't seem to make it go away.