Sebastian,
Per your recent recommendation, I have uninstalled Outpost and am now running MS Windows' firewall. My computer is running much more smoothly, and while MS doesn't have the bells and whistles, it is really far easier to use than the Agnitum product. That it comes free is a plus, too.
Thanks for your advice, and my apology if at any time I was rude to you, but then you do make your opinions easily known, don't you? ;)
Best,
Charles