I am pretty new at this, but here is one I have found:
Always check the title carefully before setting up an auto-recording. My wife wanted to record 3 episodes of Sesame Street and not get any duplicates, so she checked the no repeats box. It turned out that the Sesame Street episodes didn't have an episode name so it would only record the first one each day. Once we unchecked the repeats it worked correctly (I think, since we found it this morning).
Always check the title carefully before setting up an auto-recording. My wife wanted to record 3 episodes of Sesame Street and not get any duplicates, so she checked the no repeats box. It turned out that the Sesame Street episodes didn't have an episode name so it would only record the first one each day. Once we unchecked the repeats it worked correctly (I think, since we found it this morning).