However this situation is not one I want to suggest you run in.
I hope you are willing to work with us further to identify exactly what is happening but first I would like to try to set up a work around so that you can have all your providers (I’m not sure about Script Blocking - which does not work with Firefox anyway) running.
You said earlier that you had tried setting up a proxy using localhost/127.0.0.1 and port 12080 and I got the impression it did not help.
Would you please try that (let’s just work with one browser first) again and add one more important step?
In the Webshield please click on “Customize” and change, in the “Basic” tab, the redirected port to 88 (it does not matter too much what it is just as long as it is not 80).
When you have made the changes to the browser for the proxy and to the Webshield please terminate the Webshield and start it again. Then browse a little with your proxied browser and see if the “last scanned” and counts in the Webshield are changing.
I wanted to get you a workaround that would let you have all your providers running. Please give me a little while to check out Script Blocking (I use the Home edition and we humbler souls do not have Script Blocking) I think lukor understands what we have been doing here and he may chime back in on that.
So, this is just a workaround to get you out of the “sometimes it works sometimes it doesn’t” situation and keep you going for now. I need to do a little research but I will be back and ask you to run a diagnostic function that I hope you will feel able to do and post the results back here.
From this testing I believe that you do, in fact, have some software running on your system that played well with the intercepting of browsing with avast 4.7. However, with avast 4.8 due to some timing changes sometimes it does and sometimes it does not. We need to find out what that is and try to find a permanent solution that will remove the need for the proxy.
But … it is now past 2am here in California and I need to get some sleep. I hope that you are now in a configuration that will keep you going until I can get back to this later today.