I just purchased myself a new xbox yesterday, and I seem to be having a bit of trouble with it. I purchased an HDMI cable, and the picture tends to cut out after 15 - 20 minutes of playing. This is sort of a disappointment, seeing as I purchased a 52" tv specifically for this purpose. I should also mention that the TV picture setting is set to "1080i" and the xbox HDMI setting is set to "1080p." I've also got this option enabled that takes settings from the TV, and the TV itself is set to 1080i. I'm wondering if me having my xbox set to 1080p is causing the picture to cut out randomly, or do I just have to disable the option that takes settings from the TV? Any help would be appreciated, thanks.