So I had my first copy of Fallout New Vegas and it played just fine, until I got closer the end of the main quest. I haven't beat the game yet, and it started to freeze up on me every 10 minutes if I was walking around, or it would freeze instantly if I tried to change my weapon. I tried installing the game to my hard drive, I tried clearing my cache. I have a n extra fan on my xbox so it doesn't get overheated. I also own the 250 GB XBOX 360 with the built in wi-fi. It was the first model of the newer version they came out with. Frustrated, I took the game back and traded it for something else. I recently bought another copy to see if that would make a difference and it didn't. My question is, I have seen the game available for download on xbox live marketplace and I was wondering if anybody has any problems with the game if they purchase it that way instead of using the disc.