My DVR has an increasing number of problems. Most of the problems are when I'm watching a recorded program and it suddenly loses audio or sometimes pixelates and I lose several seconds of audio and visual. Also it sometimes hangs when I am fast forwarding commercials. I'll have to cease fast forward for a period and then start again. As I said, these issues are occurring much more frequently. Sometimes the lost of audio/visual is so severe that I just have to delete the recording. I have done resets but haven't done the reset everything because I don't want to lose all of my unwatched recordings. Are these issues a sign of hard disk failures and, if so, must I buy a new recorder or will Directv do something for me. I don't think I have any warranty on the R15.