My HR 24 does the same thing. When I wake up in the morning and turn on Directv and change channel to CNN it takes up to a minute to initiate the change.
BTW, anyone running CE software have the same issue?
Yep, probably just piling on at this point, but I'm having the same problem with my HR24.
Additionally, my wife and I have both noticed a little - I dunno, I guess you'd call it "jerkiness" on some of the channels. Just tiny jitters in the programs the last few weeks. I don't know if these are related issues - but it's something we've encountered normally when we get low on DVR space (under 40% available or so). But these days, we're around 75 to 80% free space but are having the issue.