I am having the exact same problem. When I was using the 1.11 bios everything was working great. I switched to 1.21 with securespot enabled and I started seeing this 3-4 second delay on all web pages but my download speeds and ping time where unchanged. I thought maybe the securespot filtering system might have been overloaded and slowing me down, but I just switched to the OpenDNS servers and now my internet page responses are back to where they used to be. Oh, and I have Comcast as my internet provider. 15mb down and 1.5mb up. Like I said throughput is fine it's just navigating to a new page that is painfully slow!