I am having same problem since new patch. All good till i try to quit, then total freeze up, have to restart puter.
Actually when u quit ( i am using 800 by 600) the screen appears frozen, even ctrl alt delete does nothing. This is because aces has gone back to window splash screen BUT u cant see it, screen is frozen at 800 by 600. If i click around at random and hit the right entry on invisible screen i am able to bring screen back to the arena!!! lol. Then i can minimize and quit.