I'm new to Tivo. I have a Premiere Q unit from my cable company. I'm also a DirecTV subscriber and so I'm accustom to their HR dvrs. That being said Sunday night during The Walking Dead and Dexter I had a power failure that lasted only a few minutes. After the power came back on the Tivo started up and resumed recording as did the HR21. However, the HR21 also re-recorded the two shows later that night as they were listed as partial recordings. The Tivo did no such thing. Is this normal for the Tivo? Thanks.