XBMC works nicely with the black hole XBMC beta2 version. Get only no subtitles on the films of example iStream Onechannel or Icefilms because the films are open in enigma2 media player and not XBMC itself where you can download the subtitle.
Here pictures of Black Hole with XBMC plugin iStream, you can see what I mean
And here you can see that it opens the movie in a media player enigma2
While he was actually supposed to do this subtitle (This is a screenshot of the version on my PC)
Sorry for my translated english