personally I use the free zonealarm withavast antivirus, and I have had no problems.
another user is using zonealarm security suite and also had problems, so might be one of the more advanced modules in zonealarm pro/suite that is causing the incompatibility
thank you
harpo
One of the features you get with the paid-for version of ZA is "component control". With Sins, you get a warning message "This programme is attempting to monitor activties on this PC, such as mouse clicks, keyboard strokes etc etc". The problem was, Sins would fire up, THEN you would get the message, which you couldn't see because of the black screen. No amount of Alt-Tabbing, ctrl-alt-del'ing would solve it, you had to reboot.
For the guy having problems, you can set ZA to gaming mode; it will ask you if you want to automatically answer all alerts with yes or no. (set to yes for sins) You can also set the Sins client's permissions manually in the programmes list in the ZA menu.
Or you could just turn it off...