I cannot get Gears of War 3 to run. I have replaced the disk 3 times. I have tried to install to HDD but it locks up after 44%. The Xbox is only 2 years old. I have cleared the system cache and all other manner of suggestions. Update installed. I am about to go to the Consumer Affairs department as the Xbox is no longer fit for purpose. There is no warning the game requires any particular version of console. if this is a new DVD format as suggested then Microsoft need to advertise and inform thier customers.