Just an update to this issue:
I notice that pressing a PC key while focussed / working within another program, directly effects Home Jukebox when it should be just working as a background task.
I.e As I am writing this post, if I press the 'tab' key, HJ springs into life and enters the 'User Menu' screen. Indeed, pressing the 'enter' key (as you would when typing) and HJ responds with the 'Search' option screen.
However, after a short period, HJ stops responding to PC keyboard presses even after clicking on the mouse to bring the program into focus. The mouse still works but essentially the program needs a restart to bring back all functionality.