Channel jumps to another channel or 2 at a time

I am having a problem where another channel 'overlays' or interupts the channel I am watching. There are two offending channels: 1495-ZLiving and 1483-Recipe.TV. This is what I see.

I am watching the network news and suddenly another station appears (Recipe.TV). I was not near the remote and nothing else was going on in the room. When I pressed Info on the remote, it indicated I was still on the CBS channel, but I'm seeing a recipe.

Another event. Changing the channel and as the new channel appears, ZLiving appears at the same time. I am actually watching both programs at the same time.

This has been happening about once a week. Lately, it is happening more frequently. I have only one TV and one DVR.

Suggestions?