Last night I had two different one-hour shows recording at the same time and one stopped after 41 minutes and the other stopped after 45 minutes. I checked the recording logs but didn't see anything that stood out. I tried to check the DVR log but it seems to only show the current day. I have seen this before when I was trying this out on a different box but I would see the recording flagged as being interrupted. For these, I just noticed the show length was not 60 minutes and they were not flagged that there was a problem.
Any help with troubleshooting this would be appreciated.