I haven't done much exploring on the thread model on the 770, but being it is linux.... when an application has multiple threads running (ie, being able to download a file while still letting you browse the web), those threads will show up in the process list as multiple instances of the main application. I'm still trying to follow the DBUS, but I'm betting there's some threading going on in being able to receive messages off the bus.. and those messages are things like "full screen button pressed, volume key pressed". I'm sure someone else can clarify and/or correct me.

Yes but you have one process like media-player running and shows that same process running 3 times you have a problem! I am not talking about several instances usage like browsing would or other input ps... I understand that and how it works but media player should not use 3 instances of the same process because it only needs along with some others...