I had been having endless problems get the Site Checking part of Web security to work in Firefox since V5. Sessions with chat and searches on the forum did not work.
Solution if you are a NoScript addon user:
The fix is add "conduit.com" to NoScript's wishlist.
Support Chat was not aware of this solution. I asked Support whether there was the equivalent of "zonealarm.conduit.com" to provide tighter security, but there is none.