^^ It seems really easy to get IR from the directv dvr navigation bar that appears near the bottom of my set when fast forwarding, pausing, reversing. Similar with some other static screen content near the bottom (TNT logo, for example). Just takes a minute or two. Turns into a garbled (somewhat colorful) white-noisy hash, visible on very light screens that stretch to the left hand side of my screen (black bars on the sides and no hash, regardless of content). But at least for now it does seem to go away after a bit, perhaps sometimes with the help of running screen wipe for a while.
(I'm not so sure about the directv logo that appears in the upper right area, it seems to be more persistent, but does not turn into a garbled hash, so I hardly ever notice whether it's even there or not. When I do look I do tend to see it, but it's very light.)