I recently had to swap the location of my Tivo HD with my Tivo Premiere (due to the netflix issue on the Tivo HD - you can read about it in the Tivo Help Center forum), which meant switching my Tivo HD from using the component and RCA audio jacks to using HDMI.
With the Tivo HD on HDMI, I get crackling and popping on the audio whenever moving from program to program or from program to menu and vice-versa. This noise wasn't present on the component/RCA audio.
Note, the HDMI is hooked directly to the TV and not through a receiver (some people have recommended changing settings on a receiver for this issue).
Anyone ever find a solution for this issue?