This is really interesting as I have had NO problems recording OTA at all, so far, now as I said, I haven't recorded much of late because my series are over now, but till then 90 % of my recordings are OTA.
It is definitely a hit-and-miss thing -- some people, depending on the stations in their area -- have no problems at all. For me, it only affects FOX OTA. Even if I just leave the machine buffering live TV on that channel, if I come back in a few hours and try to do something such as rewind, it immediately jumps to the beginning of the buffer and then gets stuck. Can't do anything to get out of it except change the channel.
If you were having the problem, you definitely would have experienced it by now, so I would say you are safe.