Installed Firewall and now AJAX doesn't work!

Have just installed the Firewall and have noticed that AJAX is not working on pages as the new Yahoo Mail beta or even trying to sign in into the website!

Is there a special setting for Ajax to work?

Please let me know… Many thanks in advance,


Edited to add: Well, I went back to ZoneAlarm and now everything is OK… hope the issue with AJAX or whatever it is will be fixed.