I've just got a 2nd copy of Cod2 for system link etc, bought it from a site providing region free games (based in HK). It's a legit game original c/w with holograms case instructions etc. My 360 system is PAL UK - thing is I've noticed when I play this new version (labelled NTSC/J) it makes a lot more noise in the drive compared to my PAL UK normal game - also I've noticed the dye is darker on the NTSC/J region free version.

Anyone else noticed this and do you think it has a chance of reducing the life of my drive significantly ?