Thanks to this thread I've not bashed my computer to death today, I was getting close.
I was having the same issue where after a given action the key up/down event handlers that I'd registered on the systemManager were no longer being triggered. What I was doing was this: Elsewhere within the app something else (who had a child which I'd explicitly given focus to via setFocus()) would get removed from the display (and left for G.C. to pick up) on a keyDown event. At this point the event handlers registered to the systemManager stopped picking anything up. It turns out that simply removing the item from the display doesn't release the focus, so I've manually given focus to the parentApplication when I remove it. This smells to me, am I doing anything wrong or is the behaviour you'd expect of focusing? Anyway I wouldn't have gotten to the bottom of the issue without this thread -- so many thanks.
