I have my Comcast Xfinity cable box configured so that I can record the one channel I'm watching using my TiVo Series 2 dual tuner. This was working fine until the end of April 2012. I could watch any channel from 2 through 846 and I could watch all channels for hours without interruption. Sometime during April 2012 Comcast changed their service in some way they won't admit to me. Prior to that date I could watch their music channels (numbered 801 thru 846) for hours on end with no problems. After that date the music channels stop working after a few hours. When this happens I have to either refresh the cable box (using the Comcast automated refresh facility), physically turn off/on the cable box, or reset the TiVo. Am I the only one experiencing this problem? I'm not interested in purchasing a new TiVo - it's beyond my budget.