I have a similar problem to version one reported by another user.
Although my CA Security Suite appears to run OK, as well as AdAware, Spybot and the MS Malicious Software Removal tool do not.
When I tried to run Spybot, nd tried to get the most recent signature definitions, I got a message that I couldn't connect to the server. I tried uninstalling Spybot and downloaded a fresh copy. But when I tried to install it again, I got the same message during the installation process that it couldn't connect to the server.
The MS Malicious Software Removal Tool fails in this fashion: After downloading the most recent version, when I try t run it, I see the popup that it is extracting something. But the status bar doesn't complete and the popup disappears and then nothing else happens.
So it looks like something is intercepting my attempts to access at least these two sites.
Thanks.....