My problem with the new Zone Alarm Pro is that with older versions, without fail, alerts would appear in front of any software you were running. I play games on my PC and many do not allow you to ALT-TAB or Ctrl-Alt-Del. because the ZA Alert appears behind the game screen, the game hangs waiting for ZA and I cannot access ZA because I cannot get out of the game screen.
This was never a problem up until a couple versions ago. Prior to that the Alert ALWAYS popped up in front of the game screen. Now I have to manually set up games or just quit ZA to play a game for first time.