Not sure this is in the bug.... I may be doing something wrong myself!

When using the previous versions (I'm now using V1.7a) I used to get surround output. Now all I get is stereo - both on UK Freeview and Freeview HD.
Same problem when outputting to VLC on the same PC or streaming to another PC with VLC as the client.
Windows Media Center outputs 5.1 correctly on the same channels.
Here are the video settings (while playing BBC1 HD): Can anyone offer any help?
Kev.