I bought a copy of Call of duty modern warfare 4 last week, all the week the game worked perfectly and there weren't any problems.
But today there was a little surprise to me, when i connect to the game, and press the "Play Online" button' the game freezes for 2-3 seconds, and the system transfer me back to the XMB menu.
I tried few solutions like :
Delete all saves and data.
I would like to recive a solution from one of the members.