Xbox 360 Disc Read error.. Brand New system?

Ok, so I just got my xbox 360 60 gig today, and I played some nhl 09 for about an hour earlier, I came back about 4 hours later to play, and I keep getting the disc read error.. So, I put in Madden, and it worked fine... Do you think my system has an issue, or I just need to switch the game out?? Once again this... show more Ok, so I just got my xbox 360 60 gig today, and I played some nhl 09 for about an hour earlier, I came back about 4 hours later to play, and I keep getting the disc read error.. So, I put in Madden, and it worked fine... Do you think my system has an issue, or I just need to switch the game out??

Once again this is a brand new system just got it today.
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