This F'n thing keeps shutingdown on me. It will Randomly shut down in any input mode at least twice a week. When my AVR520 was new it only happened a couple times a month but now that I've "broken it in" it seems to be happening a couple times a week. Its diving me mad. I know alot of people were having the same problem as me. Has anyone fixed there problem or takin it in for warraty work with any success?