I received my box yesterday and was very frustrated because of the stuttering movies, but with the help of this forum I could solve the stuttering problem quickly by setting the Video output to 1080i/60 instead of Automatic.
I also realized that I cannot play music in parallel to a picture show which worked in the USB version, ok, I can live with that.
Open issue: My shared Network disk works, and the system also shows my PC as a shared resource. But if I want to access my PC it asks for an ID and password. So where do I set this corresponding ID and password on my PC (XP)? I am not aware of an ID and password for my PC.