I have a Qbox s2 usb it works good on there TBSViewer-v20111220 program but its not a very good software to limited. I have tried using progdvb all verisons and dreamdvb and it allways locks up or is very slow to respond to changing channels. I have tried it on 3 different cpus and win versions acts the same on all. Tried different codex and use up todate drivers. Has any body else had the same problem. And can you help ?