When I click on the top bar of my mac 10.6.5 and click the quick menu --> preferences, then nothing happens. The system log shows this message:
06-12-10 18:41:49 SymUIAgent[967] LSOpenFromURLSpec() returned -43 for application /Applications/System Preferences.app path /Library/PreferencePanes/SymantecQuickMenu.prefPane.
Your filewall is completely useless, tried it, and my kernel crashed.