ADTech's comment reminded me of a problem that I had with a converter box and ION, and so did others. It seemed to be a problem with the network feed, because after a while it cleared up. It is hard for me to believe that the Apex boxes healed themselves.
http://www.highdefforum.com/local-hd...onalities.html
ION must have had reports of the problem because they suggested a double rescan:
http://www.iontelevision.com/rescan
What equipment are you using for reception?
Do you have more than one TV to try with the antenna?