i'm using a macmini osx 10.5.8 and i've seen these issues as well.
"connecting..." but never connects, i would assume is because the game host doesn't have the correct ports open on their router. i've confirmed this happens on win7 via bootcamp as well.
"black screen" but chat works, if you use F5 to jump to full screen mode and then back again, it forces a screen redraw and then all is ok. This has also happened to me in win7 via bootcamp.
"apple Q doesn't quit program" yeah, it doesn't. the "file menu > quit" doesn't work either. if you just click the close box (red button in the upper left) the program does quit, avoid the "force quit".
Hope that helps! see you in-game
