So this is probably happening because the channel logo isn't saved or associated with the recording and the channel has changed since the recording has made. Channel 9440 now is Cinemax HD West hence the Cinemax logo.
It's actually kinda annoying to me that the little recording titles aren't saved on the receiver and they have to be constantly streamed down from DISH Network. You'll have a nice icon of say the Lost logo when you make the recording, but keep that recording there for a couple weeks and it will eventually become a generic colored image that looks like a crappy desktop wallpaper. What they need to do is either save the logos and show tiles on the receiver or make some kind of link in the meta data of the recordings so that those images can be preserved.