Last night my 721 started experiencing problems with the 30 second skip/10 second rewind tools. It's only skipping forward approx. 15 seconds, and it is only skipping backwards 1 second, and won't let you skip further back than that, so every time you hit the rewind button, it starts again exactly where it did the last time. I hope this isn't the way it's going to be from now on; anybody out there have this problem before? This is my 3rd 721, and the HDD is getting louder and louder, where it was silent, like a PC, for about a year. Now it's got a very annoying mechanical sound that you can hear from across the room quite easily. I have about 65 hours recorded on the HDD.