I'm not sure why the connection has been reinitialized error occurs (I only know I didn't have that problem on the site), the web shield should scan and alert to any infection but not block.
I can only assume that this is some sort of conflict with the web shield, do you have any other security software installed (firewall, anti-spyware, etc.) installed ?
I have several firefox add-ons NoScript, etc. which were selectively allowed on the site, I don't know if you also have any such add-ons on your browser/s.