I bought a 360 a week ago, i keep it well ventilated and all. When I play old games like madden 07, saints row....i hear weird sounds on the xbox when the cd is inside. This is when my xbox 360 is in the vertical position...when it is in the horizontal position, the weird sounds of the cd drive go away. The games still work fine however, even with the rumbling noise. When i play halo 3 on the other hand, the drive is quiet horizontal or vertical position. Is there something wrong with my 360? or is it the games that are messed up.