The URL Filtering behavior is inconsistent between Firefox version 3.5.3 and Internet Explorer (IE).
Firefox's latest release, version 3.5.3, fixes a security issue which, in certain situations, causes HTTPS URL query behavior to be inconsistent between IE and Firefox.
As a workaround, add the blocked page to the approved list again:
- Log on to the Worry-Free Business Security (WFBS) console.
- Click Preferences > Global Settings.
- Click Desktop/Server.
- Add the URLs to Web Reputation and URL Filtering section.
- Click Save.