anyone has freeze-lock problem during playing the game.....played dota since last december 2011 until now....dun have any freeze lock-up problem until this new naga patch....sometime after 30 min in the game will freeze up and require manual reboot the computer....i dn have this problem in any other game like max payne 3,diablo 3, BF 3...etc..and i dn think is overheart..any help?....also checked many other forum..dun have any solution....