I've got GBPVR working with the Hauppauge HVR-3000 via DVB-S. The PC doesn't have the grunt to do DVB-T, and the terrestrial signal is crummy to my house anyway.
All recordings via DVB-S display suffer from a contonuous colour shift towards red, which is reset every two seconds. White and light backgrounds in particular are noticeable. I assume the reset is due to a key frame being sent that resets the colour balance, but it could be something in the tuner rather than the broadcast. Is anyone else seeing the same thing?