Thanks for crossing your fingers, spd2demum, it worked.

Hard drive had failed completely in box replaced two weeks ago.  I know, I know I should have listened to you folks but it is like pulling teeth to get ATT to send another tech to come out since one was here for two days and didn't solve the closed captioning problem (and I was P.O.'ed at the folks in Mumbai).

It appears the closed captioning problem was both of the former Motorola 1225 STB's.  So far the DVR has not lost captioning on HD channels (at least when they are running on SDTV connected to box by standard video and audio cables).

We shall see. Stand by.

-TWC (sucks)