I don't actually play Busou Shinki (anymore), but I'm installing it for a friend to use. I don't read/understand Japanese at ALL, I hit the button to access Battle Rondo and it has been patching the launcher (I'm assuming) for over 24 hours. It was almost done earlier today and it seems to have restarted itself.
Around 11 am, the blue part was almost fully to the right, I get home around 5 and it's closer to the left.
I apologize if this is the wrong category, I just wasn't sure where to put it.