zonealarm pro causing firefox to stop working

I recently installed zonalarm pro to my computer and since then I been having a lot of problem with firefox. When I first turn on my computer firefox is working fine but after open a firefox window, I can not open another one and when i close existing window to try to open a new window, it stop responding. I have to reinstall the program (both firefox and zonalarm pro) but that doesn't work. I have use zonealarm before but it was the free version and everything is okay, but since I wanted more protection, I switch to the pro but started to get me frustrated because I have constantly restart my computer. Can someone help me out and suggest a solution. I'm not sure if the pro is compatible with firefox or not, but should I switch my firewall to something else?

 

no, not really, I'm using the pro version not the suit. As for other program, I have avast anti-virus, spybot search and destroy, superantivirus pro (use as a realtime blocker) spyware blaster, and Malwarebytes Anti-Malware free as a scanner. Most of my software is base on this threat. http://forums.majorgeeks.com/showthread.php?t=44525

 

hmm, maybe I should give another program a try. It just I use zonealarm for a very long time (it was my first firewall), but if it doesn't give me much of a protection, there no use in having it. Thank you very much, I'll give Comodo Internet Security a try.