Okay, I just ran through all the programming and did some sampling for you. I get CC on most of the channels including HBOHD, SHOHD, I also tried Cartoon Network, TNT, USA, FOOD, and about 10 others . There was not CC on ESPNHD, HDNET, HDNet Movies or but there was on the CBS West HD, even for the news. All I did was go into closed caption and select caption 1.
SO I didn't make any adjustments on my TV or AV receiver or place else. One thing I am with you on is Voom stinks. They have potential but they gave me 2 FREE months of VaVaVoom and I still cancelled after less then 3 weeks of total service.