One of my two HR24 units are slow to change channels or pull up the menu at times (up to a minute). My second HR24 does not have this issue. The differences are one is a -100 and the other is a -500 (with problems).
The only other thing that I can think of is that on this particular unit I have keyword searches for sports like "AALLL Team name CCHAN 2 206...."
DTV is finally going to send out another unit to replace this one after many calls but I am curious if anyone else has had like issues come up in just the last two weeks?