After a coding session last evening with Roman and Mario, we were finally able to sort out the remaining focus issues. Together with some event-handling fixes (no swallowed events anymore) and memory-leaks-plugs (one caused by SwingSet2 itself) I implemented things are coming together quite nicely.
Roman was so kind to host SwingSet2 on his vServer: http://icedrobot.de:9091/SessionInitializer?cls=SwingSet2
PS1: No idea wether it can handle the load, at the first announcement it ran out of servlet threads almost immediatly. Update: Ok server overloaded again, please don't leave it open for ages to avoid lurking sessions.
PS2: Keep in mind this was designed for low-latency lines
PS3: It still only supports german keyboards :p