oNyx: you don't happen to be running osX? I friend on osX got the same problem, don't know if it has something to do with the Robot class not being fully implemented in the osX vm, I have some vauge memory of that. There are also green squares that makes the dot jump around, you didn't stand on one of them?
There are 10 levels so you were pretty close jojoh
as for your "Ctrl-lock"-request I'll look into that, there's not many free bytes right now, but I haven't tried to bring down the size of the code yet that mutch either.